The most unrealistic thing about American communists is they think a multiracial working class could be united towards any goal whatsoever. You really think you'll get Guats, nigs, and hillbillies working together because you read them some Jacobin articles? Nigga please.
Some of them also think the class struggle will be Third World vs. Imperial Core, like in Sakai's "Settlers". I kinda agree with that. Sooner or later 3rd world populations will grow way past what primitive societies can handle and they'll come for our shit in the west. But it's amusing what they think will happen and whose side they'll be on, like Matt Christman does at about 11:00:
Bro, how can you really think your rich white podcaster ass would be accepted as fellow revolutionary by the brown hordes? They'd kill you (because lord knows you're no use as a slave or concubine) and steal your iPad/drug stash. They'd redistribute those ill gotten gains of the first world right out of your Brooklyn Brownstone as you bleed out on the floor. And if things got that bad, Bernie Sand-in-Vagina and the DSA wouldn't do shit to prevent it from getting that bad.
If it's "Us vs. Them", I'm picking "Us", thank you very much.