Regarding "If you search "Crow 闇堕ち" on Twitter, which literally means "falling into darkness" / "turning bad or evil"
Excuse me for not knowing how the quoting works on online forums.
I've always understood it as a so-called "nerdy/weeb" term to describe crow. I don't think it was used to criticize him IMO (not a native Japanese speaker)
PS Where do you find hate against Zeta players? All I can see are "gg"s and "nt"s and "you tried your best"s even after absolutely horrible performances