>>9156362Probably more of the latter, but I imagine the majority are just shitposters. May or may not watch any chuubas, but regardless they just want to stir the pot.
If I had to guess, it's probably:
shitposters > holofags > actual angry tsunderia fans > people who don't care about tsunderia but ARE offended by a chuuba "betraying" an agency > people who anti her for some other reason, although I can't imagine what.