[@Odin]

I think in that case instead of discriminating against others the adult and responsible thing to do would be to just not RP smut at all. To be honest, the fact that people are getting MORE bent out of shape about being gender-selective for smut RPs is actually proof to my point that there is something very skeevy and creepy about it. It goes right back to the "treating RPs as a dating service" thing. People should be able to RP with someone without conflating the IC and OOC relationships. The fact that some people can't is a problem. It leads to drama and worse. Sexism is the obvious main issue here, but even if it's not sexism exactly, it's still problematic. If you're playing your male character as being balls-deep in a female character and the RP is going well, why should it ruin it for anyone to find out that your partner is a guy instead of a girl? There is literally no logical or reasonable excuse for being uncomfortable. You're never going to be in a romantic or sexual relationship with your RP partner. 

The real question here is "can we all be adults" and the answer I am getting is "no, no we can't."