"GIRL's", Hahahaha I've played plenty of female avatar players or players with "Babe" profile pics, that are surely guys... but whatever. I haven't found there to be a distinction between the poopers, between the genders.
I have definitely encountered nasty players, but it's rare. I'd say like 1 out of 50. That's incredibly rare for a competitive, multiplayer game.
From some of the nasty players I get cursed out, threatened, etc. This doesn't bother me. The worst for me is when a nasty competitor is facing a loss and they continue to intentionally miss 1 ft. putts for like 8 times, sometimes even shutting down and re-booting just to cue the reconnection screen. This can eat up 10-15 minutes sponsorship time.
When I've encountered those shenanigans, it's always been from a middle eastern player (Pakistan, Egypt, India, etc.). Not stereotyping, but that's the case... and I find it amusing considering it's probably from regions where real-life golf isn't a common commodity therefor golf etiquette probably isn't expected.