Agreed, 100%. The male victims of Kevin Spacey's abuse should be supported and believed just as the female victims of [insert whatever powerful man is behaving badly today, because tomorrow there will be another].
The most enormous difference is, women are socialized our entire lives to keep men happy. To keep them from getting angry with us, because who is to say that the butt grab today, if we report it or tell them to stop, won't turn into an assault on our lives tomorrow? Women are told we shouldn't wear that dress, or we shouldn't be drinking, or we shouldn't be at that party, or we shouldn't be out alone at night, and a ton of other unwritten rules that men as a group literally never have to spend a second thinking about, in order to 'prevent' sexual assault. The reality is, men need to behave better.
Most (if not all) women I know have a story to tell about sexual harassment or sexual assault. Most if not all women I know take precautions to attempt keep themselves safe in literally every public space they ever go to. Does every man you know have to do this? If not, why not?