Most of your examples would seem to apply to both men and women.
With some minor edits:
Or maybe coding is something that when men try to get involved they discover they are unwelcome.
There's the one guy who's just a dick. (to men and women)
There's one who hasn't washed since 2004. (smells bad to men and women)
There's one who has to one-up everything he says. (annoying to both men and women)
There's several who have to hit on her because she's the only woman they get to talk to. (Ok that one is almost 100% women only)