Yeah, the high-level premise isn't what's mistaken here. What's mistaken is the specific idea that it's more helpful to make racist overtures to racist neckbeards than it is to reach out to anyone who isn't white.

Sometimes I think V*ush posting is :haram:, but then I think how important it is for leftists to loudly, constantly shout this shit down. Groups are often judged by the worst of their members, and distancing any burgeoning leftist movement from racist garbage is worthy of attention.