Spamming an artist like that is stupid and that discourse is old when I'm sure there's a sort of middle ground answer (although that'd kill fandoms involved)
I've always found that "worst fandom" title pointless and tbh I'd say the say for a best fandom discourse although it's a less toxic discussion. It all boils down to a mix of the fandom size and the group's success + the hate the group gets that sometimes is fuel for fans being defensive in the shittiest way possible.
With that in mind, armys are obviously going to be part of the most toxic as the biggest group fandom in the world. Which isn't ok but I don't see the point of those threads you're making except feeding a weird superiority complex (ironic for some) and in the end fueling hate towards a fandom and entertaining a vicious cycle.
You're not the root of the problem here but you're definitely a part of it (not just op btw)