When kpop fans especially those stans twitter (the hell of kpop) hate that group and all negative opinions or 'constructive criticism' about them being massively like. And more kpop fans suddenly agree that the group is only popular but not talented. Anything saying the group is untalented and didn't deserve their popularity getting a lot of likes. I was active in Twitter back then during 3rd gen and I see opinions like this about Bts and Bp with thousands of like every two business days. It's the way how I know they gonna be the biggest among their peers. Hate definitely created more protective fandom.
Also it's a sign that the group actually treating those kpop fans' faves so they collectively attacking the group indirectly. It's as simple as how hard people trying to bring them down and how some people always trying to cancel them. You can see it at every cb for example, there's always someone who getting triggered with anything they do. Remember the infamous Bts sajaegi accusations until their company need to go to court? That's one of the extreme example of this case. Mostly, they just trying to create the dramas online or something to make the group get cancelled.
That's one thing kpop stans never learn or realize. If you don't want any groups to succeed or surpassing your faves just don't talk about them. Don't attack the group. Armys and Blinks literally become the strongest, biggest, loudest and also toxic because of this. But who cares, look where both of this group stand right now, on the very top.
I'm not active in Twitter for now so idk who's their target and punchinb bag there right now. But whoever they are, congratulations for them because they already made it.