It is definitely infantilizing to assume that any group can't adopt/use a word if they want, really has nothing to do with genders or anything like that as you seem to assert. Women don't have some unique historical relationship to the word "cock", and even if they did I don't think that would be a great reason. The black community reclaimed the N word, and that word is so extremely polarizing / offensive I'm calling it "the N word"! It's not about "toughing it out", it's about growing up and recognizing that words are whatever you want them to be.