I'm an anarchist, and online I'm fine to talk to MLs, and I've learned a lot about anti imperialism from them, but IRL none of the local ML or Trotskyist groups are worth organizing with, since they're (true to stereotype) control freaks. The exception is a local university ML group that runs along anarchist lines and has a libertarian bent because of its abolitionist politics.

I don't think it's an op, I think there are genuine differences between anarchists and marxists (especially the older ones, pro prison ones and electoral entryists) that get exaggerated in the internet's acoustics of conflict.