Oh but you can write all the books you want about Western leftists fighting in the international brigades of the YPG. We can clearly divorce those international brigades from the ones that during the Spanish Civil War mass murdered priests and nuns due to clergy not supporting commie ideals back in the day. Hell, we'll even overlook how the YPG was documented to have demolished homes and driven families out of their land without a military reason (a war crime) and employed child soldiers.
This isn't even say much about Westerners, this is a purely political play. Almost every organization and ideology can be sanitized and rehabilitated for modern consumption, except for the Nazis, Confederates, etc.