More than just non-conforming generally too. They super quickly embraced that non-conformist image when it came to the masks.
But it feels like just calling them weird triggers a primal fear within them that they're not really part of the "in-group" after all. It works where other insults don't because they can't easily write it off as their enemies simply being jealous of how cool they are basically.
I would absolutely kill for a Weird Al parody of "Not Like Us" about how deeply and toxicly creepy and weird these rightoid freaks are.