A Cryptofascist is a fascist that is hiding the fact that they’re a fascist. Definitely a thing that happens, generally in order to slowly win people over to their line of fascist thinking before they feel comfortable taking off their mask. Other times they just do it to sealion or other types of bad faith bullshit.

In this context it’s just a way for tankies to accuse people they’re mad at of being nazis without any credible evidence. They’re just pissy that piefed is off doing its own thing and undermining the work of the transphobic authcom Lemmy devs.