To be frank, I doubt some of those people are even actual Fanfan viewers but his own simps pretending to be Fanfan's so they can manipulate him into distancing himself from her.
Some big coincidence that both Fanfan and him are getting similar hate messages from alt accounts telling the other to essentially stop being friends and to stay away from each other. The one Fanfan got in particular, I wouldn't be surprised if it came from someone lurking on this forum to be honest.
Hell, even some of his discord regulars sound like they're starting to resent Fanfan, especially after that leak, and they're subtly trying to push him into doing solo games and gaming with other girls like the one he met on Valorant funny enough. So again, somehow my gut is telling me the hate messages he gets aren't ALL from crazy Fanfan viewers.