Have you been to kpop concerts in 2015-2019?

Generally the same as they are now, but fewer arena and stadium shows. At least here in the West. I can imagine it being different in Asia, where K-pop concerts have been in high demand for much longer.

I just saw your other thread, so now I get what you're referencing.

For fan behavior, the most noticeable thing is that audience members these days seem much more judgmental. They go on X or TikTok just to complain about how others weren't being loud enough, dancing enough, etc.

I think it's ridiculous of them to judge. As long as people aren't being disrespectful, they should be able to do what they want without being judged for it.

Not everyone wants to be loud, and that's perfectly fine. Not everyone wants to act like they're the main character.