Man is the default for human. (not 'male', no sex or gender implied, here)

Used to be wereman and woman. We dropped the 'were'.

Memba werewolves, though? Yep. Same exact, but reversed, problem as mermaids.

Basically, people worried about taking 'man' out of things are just supremely uninformed and don't really understand the context regarding how it ended up there.

That we got versions of words with the 'wo' added in to specify women is just like people continuing a volley in volleyball after the ball went out of bounds, it's technically fine, but we kept doing it and now we have to deal with this bullshit.