I've seen some pretty racy usernames that Gaia has let slide, and I've been around for almost 10 years now. lol
The only time my name became an issue was when I was a mod. They asked me to change it, I said no, so I wasn't a mod anymore.
Anyway, it's the same thing I told them when they asked me to change it, saying something/someone is "perverse" isn't strictly sexual. "Perverse" is defined as being turned aside; hence, specifically, turned away from the (morally) right; willfully erring; wicked. So one can be completely perverted and have absolutely nothing to do with sex.