How does he simultaneously look exactly like: Snape, Sirius Black, Remus Lupin, and Peter Pettigrew? It’s like bizarro world Marauders where the hot one aka James was replaced by Snape - oh hey this must be what Snape saw in the Mirror of Erised, lmao.
Anyway, FTMs got away with a lot for a long time because while it’s not unusual to see a manlet in the wild, facial hair isn’t something a lot of people know an FTM can really grow. Not all can. The FTMs who pass - or rather, do not attract enough attention to clock - tend to have beards. The ones who can’t grow beards or don’t want to tend to just not be noticed because nobody looks at butch lesbians except other actual real female lesbians who are into butches.
As more people become aware of what an FTM looks like, though, they will be clocked much more readily.