It may not have even been a conscious decision as such. Being constantly bombarded with messages of this is what a woman should be may well have this effect subconsciously.
You are also not allowed to question whether this state of affairs is reasonable.
Welcome to HN!
Almost as if assuming you know more about someone's identity than they do doesn't make you some critical-thinking free speech martyr, just a presumptuous preacher telling other people how to live and express themselves.