Part of this is the difference between "post-left anarchism" (which is still anarchism, even according to a large majority of people who disagree with it), and the "post left", which was a US group of initially vaguely social democratic people disappointed with Bernie Sanders' loss that went rightward quickly and are now sort of the left wing of the alt-right. If you're not familiar with the minutae of US online politics you could easily mix them up.