While your statement, put that generally, is certainly true, i wonder if you're familiar with leftism in Germany or in Europe in general (honest question). Antiracism and Antifascism are almost part of the core DNA of many of these circles or at least their self-perception. Doesn't mean that they necessarily live up it, of course. However, the term "left" means something quite different in Europe than compared to the popular usage of that term in the US where, i believe, a large chunk of the audience here is based.
For real, plenty of authoritarian leftists in the world who think the only path to socialism is through an autocracy with a heavy sprinkle of ethnic nationalism. But I think the commenter meant the more lib-left in europe, the kind who would be friends with anarchists.