Western leftists in general frequently fail to extend their understanding of politics beyond branding, self-actualization, and team sports thinking. They retain a lot of the liberalism they grew up with. This applies to all general flavors of leftist and is also about leftist flavors, where Western leftists are more concerned about which overly long Starbucks drink-esque subdivision of left you are than whether you can work together to build power.

An Anarchists that is pissed about a betrayal at Kronstad or whatever is just as ludicrous as a ML that is angry at SocDems for murdering Rosa. Sure, try to learn some lessons from it and with a good amount of contextualization, but we don't live in those conditions anymore and you're just LARPing by getting angry at another Wisconsinite corn-fed white guy over what some Europeans did to each other generations before you were alive. Because they're your sports teams, lol.

This also applies more generally to Western leftist infighting. Sometimes it's all in good fun jokes and such, sometimes it's losers taking it incredibly seriously and hating each other over supposed political identities that they probably can't articulate.