I always liked music from both GG and BGs, I've always found GG music and MVs to be much more likable compared to BGs. Still, my favorite groups and the ones I invested most of my time in were always Boygroups, with only Mamamoo and Red Velvet making my top 10 list of most listened groups the other being all Boygroups
I think it used to be fairly common to listen to several Girlgroups, but save most of your time, and investment and purchases for one, two, or three favorite boygroups. That's how I think most of hardcore pop fans used to behave
However there is a not-so-sudden increase in GG album sales. Yes I'm aware BGs still selling more. The world's biggest girlgroup can't sell 3 million yet, while the biggest boygroups either are selling 4 million or are going to sell in the near future
Still, the gap between GGs and BGs sales were never nearly as small as today since the 1st generation and we have several GGs outselling their males counterparts and generation friends. Kpop growth aside, one could expect BGs to outsell GGs by a comfortable margin still, as most of the new kpop fans come from outside Korea, and outside Korea BGs were always much more popular than GGs. So... what's changed?
This is a LONG post, so for people who don't like to read, here is the TLDR version:
1. Less Sexualization
2. More fan content released
3. Better live performances than during 2nd and 3rd generations
4. Boygroups no longer releasing enough good music to fill niches they used to in the past
5. GGs don't get sidelined because they release a flop song in Korea
6. Outside Korea and Japan people don't need to pretend to date their idols hence why gender matters way less
Now a little more detailed perspective of the points stated before:
1) Girlgroups are no longer as sexualized as they used to be before. Really, I entered in kpop in early 2016 and I find this difference REALLY jarring for me when I watch NewJeans, Ive, Aespa, Les Serafim, Itzy and so on, they still hot as fuck don't get me wrong, but do not feel like this is their main selling point. Many girlgroups who used to release hits between 2012-2015 were going for sexy concepts, It used to be almost mandatory actually. When not releasing an outright sexy concept, it was summer or cute concept with some a degree of sexy undertones, which IMO was even worse. This might work in Korea, but it definitely NOT work outside Korea, especially for an audience that is mostly compromised of females
2) Girlgroups are now releasing much more fan content than in the past. When groups only sell in Korea, it didn't make much sense to spend a lot of money to create big fandoms to sell what? 50k? 100k? Thanks to the natural growth of the industry, the pool of customers are now big enough for a company to see a girlgroup as financially viable, even if not as viable as Boygroups. Investment drive sales, the more money you spend on fan meetings, lives, SNS engagement, reality shows, and so on, the best are the odds of solidifying fans. Remember fans need engagement to keep interested in groups, I remember Boygroups having much more fan activity than the girlgroups I liked, for god's sake, many 2nd-gen GG didn't even have lightsticks. Now companies are willing to open their wallets, they can cultivate the results of investing in their Girlgroups
3) Quality of live performances between GGs and BGs used to be quite big and is now almost nonexistent. I remember watching award shows and year end Gayo performances and comparing the quality of stage production for the hyped BGs and the biggest GGs and damn it, the difference was absurd. Hardly one or two girlgroups a year bring well-produced stages with visual effects and many dancers, while SEVERAL boygroups were bringing incredible performances. Not only that, BGs music was just so much more enjoyable to watch on stage, with heavy choreographies and fierce concepts, no wonder why 2NE1 used to shine so much on those awards shows, they used to bring charm the most of Girlgroups did not. Now when I see girlgroups dancing, I can clearly see how much stronger their dances and stage production became and how much more interesting to watch they are. I no longer feel I'm watching a "inferior" product on stage when I watch girlgroups, if anything they are the best performers right now because they music is actually fun and pleasant to the years unlike most of boygroups
4) Girlgroups now are filling niches because big companies are having trouble fitting concepts with their boygroups. As a 3rd gen stan when I wanted to listen to good BG music, the options were endless. If wanted something sexy I could listen to Monsta X. Something more R&B-ish? BtoB all the way. Pop-ish, with groovy and R&B tones? You can't go wrong with EXO. Bubbly pop? Astro! Do you want a rock band? Day6. Something more electronic? BTS have many bops. Hip-hop based? iKon. I can just keep saying several mid-tier boygroups from 3rd gen who used to release good music that fit any mood or concept, the point is BG music used to be very diverse, I don't doubt there are still quite some options on BG side but they are either too unknown or keep changing concepts and it's hard to follow. BG music became far way too dance-oriented to the point it became the standard of BG releases. This gave a lot of leeway for girlgroups because they are somehow monopolizing part of kpop sphere that, in the past, used to be much more competitive
5) Girlgroups are no longer being as heavily affected by stupid scandals and no longer depends on issuing korean hits to keep getting investment. Remember, a fandom needs TIME to mature and become strong. In the past girlgroups seemed to be close to the edge of disbandment after releasing a flop song or two with companies almost completely dropping them in favour to new groups. If Twice and RV were 2nd gen groups be sure Twice might have disbanded by now and Red Velvet undertaken indefinite hiatus. With a healthy influx of investment and comebacks, girlgroups can manage to have stable fandoms now. Look at G Idle, took them 5 years to sell 1 million when it past Cube would just have the group on hiatus, debuted Soyeon and nobody would know what have happened to them. Imagine Itzy state after Cheshire? They would get one comeback a year at best
6) Lastly and IMO the most important, international fans, mainly SEA, indian, chinese and western fans do not need to think they idols are girlfriends/boyfriends. In Korea and Japan being an idol fan means basically you pretend to date your idol, i.e. you will mostly only stan groups you're attracted to. In an industry where the audience is heavily skewed towards females the males who enjoy kpop are either music nerds or weirdos like myself ofc is no surprise that people would stan people of different gender, as most of people are straight this used to give Boygroups an edge. However, this fact no longer holds true to an audience outside Korea/Japan, who seems kpop idols are just standard foreign pop singers as they fill the niche American pop signers used to dominate with kpop girls being a replacement for USA pop girls. To give an example, in 2019 BTS concert audience in South Korea was only 4% male, while in USA this number was 27%
And I think that's it. This has become a very long post, so discuss