First male nymph?

Nah, Theros is based on Greek mythology and they didn’t have male nymphs. The male equivalent were satyrs. Greek culture isn’t WotC’s costume, and it would be misogynistic to allow males to colonize female space in Greek mythology. It’s clearly a female with small bust and a simple typo in the flavor text.

It actually does bother me pretty profoundly considering how slavish they are to the demon/angel junk

Well, considering how the biblical angels are traditionally seen as male-presenting (we are using their names as male names, for instance), switching the genders of nymphs and sirens is totally in line with how WotC have always operated.

And honestly yeah male nymphs bugs me as do female satyr. I guess they didn’t want to force a connection between the two because the general public wouldn’t get it but still.

In other news, this seems like a decent common that will turn the eventual Cancel variant into Counterspell in limited. Doesn't seem to be quite good enough to make waves in constructed formats unless it ends up enabling something it is not supposed to.

Everworld leans into nymphs and satyrs being creations of the gods, so they have very limited personalities based on what traits were given to them and a satyr gets cut in half and he is literally hollow inside.

Yeah, there were several times where angels appeared in more humanoid forms, and were only recognized as angels once they performed miracles and then vanished. But then there are also the angels with four faces, only one of which is human. And the angels which are wheels within winged wheels, covered in eyes. It's a scale.