I've encountered takes much worse than OOP from real life anarchists, though the main one I'm thinking of I think I can't talk about for opsec reasons. Let it suffice to say that it was literal Nazi apologia that was pretty extreme and basically motivated by wanting to own the commies (this person came off as being brainrotted by internet anarchists who tell campfire stories about how they were stabbed in the back in Spain).

I have seen that and maintain that typical anarchists are much better than the OOP, and I would expect that the comrades of the anarchist in your story were cowed by his record and reputation as such a prolific activist, which is still wrong of them but different from them not viewing such an invasion as being barbaric.