Because fans will adamantly defend their idols to the degree where it’s just accepted that these people are allowed to get away with treating their own fan ases like shit. When you get to the point where you’re like >>100469640
and dismissing any sort of backlash as “oh it’s just /pol/ again” you end up sending a message to all egotistical asshats that “Hey, say whatever the fuck you want. Nobody will hold you accountable.”
This is why you nip that shit in the bud as soon as possible, rather than letting it slide until we hit the point it’s at now because you’re afraid of speaking up and losing your precious cartoons.