Is everything that Japanese people do that the Westerners don't like "idol culture" now? It's such a cringy, overused redditor/normie term honestly, obsessing over that idol label as if falling in love with celebrities/artists/entertainers etc. was somehow reserved to the idol industry. Anyway the biggest omission here is ignoring all the craziness from mafumafu's female gachikoi and making it all about angry Rushia simps who are at worst mostly just sad or confused by the whole situation.
Whenever some controversy blows up it's almost always outsiders who jump in on the drama to larp as morally outraged citizens so to say while in reality they are just a bunch of bored trolls and antis more than happy to provide them with ammo, at least that seems to be the case with pretty much any East Asian drama. In this case people who shit on Rushia are largely just generic Vtuber-haters like Jun-fans, combined with her long time personal antis and general hololive antis that often happen to be also nijisanji stans:
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