Inspired by this thread (where I was downvoted), I've decided to post my own thread on the subject.

Short version: Creep shaming is to men what slut shaming is to women.

Long version: In the evolutionary sense men who were sexually unsuccessful were the big losers since they didn't propagate their genes. Women on the other hand who were promiscuous faced loads of dangers from indiscriminate reproduction, and even death in many cases of complications from pregnancy. Fast forward a few hundred eons and it stands to reason our instincts and culture would be influenced by these very real biological aspects of human nature. So how does this apply to creep shaming? Well, if you frame a man as a creep you're disqualifying him as a sexual prospect AND creating a social pariah out of him that will also hamper his chances with other women in the social group, which is exactly what calling a woman a slut is intended to do.