That kind of depends on whether or not society as a whole endorses stereotyping on the basis of sex and/or gender, doesn't it?

If yes, he may have a rough time.

If no, people will recognize that decent people need to cooperate to protect each other from the violent, the predators, the exploitative. One can't catch or prevent all such behavior, but we can do a lot if we're not too busy ruining things for other decent people on the basis of stereotypes.