The reason why posts expressing resentment toward RESCENE's rise keep appearing

Is it resentment toward a small agency idol surpassing major agency "blue-blooded" idols to become the most talked-about idol currently?
Surprisingly, while people love underdog stories, they tend to tolerate them only as long as they don't cross into the mainstream; it seems there is a sense of backlash when a non-mainstream entity actually defeats the mainstream.
A similar sentiment is expressed in Slam Dunk as well.