Came here from Blaire White's video
Tbh I'm not fan of using taunting nicknames for groups of people. I think that it inhibits discussion and makes us look kind of clique-y. Like yeah, of course I think it's abhorrent that a significant group of trans rights activists are shaming people for their sexuality but we're not going to change their minds by calling them names. All it does is give them ammunition to call us hateful and childish.
This is also the kind of thing that some incels themselves do- they call women "roasties" in an attempt to dehumanize and discredit them.