I hope anyone who says that is coming from a subjective point of view. Cuz you gotta be absolutely dumb to think it declining is even remotely true from an objective standpoint
Artist are getting more sales, downloads, views, tours, and more than ever before. Even the west is an open market for Kpop now when it wasn’t (really much of) one before
Like if you’re saying the music or members aren’t as good today as it was in the past then that’s one thing. Though I can easily disagree & say it’s better than it ever was, so there’s no actual fact on that
But if you’re trying to push it as a fact when numbers clearly contradict your stance, then…. Idk what to tell you