Yes, people are mean to everyone online. The difference is you aren't pre-judged based upon your sex on whether you are good or not. You aren't harassed by these people constantly after they find out your sex.
But no, I have never had anyone tell me I didn't have the right to play the game. I know it is hard for some people, but you have to look at something from another's perspective. If you think the online experience for men and women are the same, you are flat out wrong.