Those guys are fine, I like them. Anyone who's against that kind of thing isn't a real anarchist, "ancap" or not. There are dipshits in every movement who are inconsistent or toxic, usually both. Some communities are completely overrun with it. The reddit ancaps are not representative of the whole population of ancaps, and the specifically inconsistent ancaps are even less so.

I am not as familiar with ancoms outside of social media, but the same principle holds. The vast majority of supposed anarcho-communists I've talked to, including ones in person, were closed minded fools or open minded people being told by closed minded fools in yheor community not to talk to outsiders.