Embarrass is probably the least of it.
Control. Dominate. You can't stop me, you can't keep me out, you have to let me see you naked or surrender to me and leave. Gosh what a lot of power for those into coercive control and abuse. It might range from 'I'm beautiful and being me and I don't give a fuck if I've destroyed your enjoyment or access because behold the wonder of me expressing myself' to intentional, but whatever.
Then there's the 'you're beautiful when you're angry darling' ones, who love the hand off sexual assault, control and power to smirk and look and be inappropriate in ways that make women deeply uncomfortable but can do very little about other than leave, and who love seeing women react to their power.
Then there's the ones who are getting off on it, let's be honest: the cameras in toilets, holes cut in doors, phones under doors, the ones who share on social media the wanking in rooms where the know women have their knickers down, it's ridiculously naive to pretend there's no group of males of all identities and genders who do this to women.
The thing is, it doesn't really matter what's going on between the ears of the male who's just asserted his dominant right to do his thing and overturn women's consent. The woman still has the choice of accept the loss of her space and make the best of the crumbs he's left her, or to leave. Particularly if she lacks the privilege to be able to just try and carry on and ignore him.