Just because the world has gone mad with Kulturkampf shite that doesn't mean we have to sit on imaginary fence posts.
Appealing to people's better nature seems futile when they're richly rewarded with attention and Patreon money. This guy has 1.4m subs and uploads a couple times a month. He was probably very relieved to have more fodder to re-distribute.
Jim Sterling corned himself this way, too. Live by the shit-stirring commentary, die by the shit-stirring commentary.
As for the video, I only read this thread for anything anime, so I don't know how much he's exaggerating things but he reveals his hand too much when he laments the quality of discourse. Fingerwagging in a heavily edited, almost 7 minute long sarcastic diatribe. Come on, man.