I'm very sorry to hear what happened to you. USNA '10 here, Male. I will say, I was a pretty thin guy at the end of my Plebe Year, and several of my firsties who preached the Academy drumbeat all year long came up to me on the day of Herndon, knowing I'd be near the top, and told me to not let a woman's cover get up there. I was kind of shocked. I resolved to not be like them and I wasn't.
With that said, I never have once heard of a tradition of sexual assault taking place during Herndon. I mean, it's literally done in broad daylight with parents and local media as onlookers. None of my friends ever talked about going to Herndon with any goal other than to get to the top and swap the Dixie hat with the Cover. I'm not disputing that something happened to you, though, and for that, I'm sorry. I think the reason people are skeptical are because we're all fully clothed and it's done in broad daylight, right?
We want to help you though and please don't do anything that will lead to self-harm. There are outlets out there, and if you need to talk, PM me and I'll send you my details. I'm sorry apparently no one helped you while we were at USNA.
As far as the new female covers go, I guess, I would just say, that I know of no man on Active Duty was advocating for them. If I recall, that was a SECNAV Mabus decision done after a couple years worth of studies and wear tests to see what women thought and it was decided to go with the current design. No one has forgotten about your friend and no one forgets women are in the Navy just because there are new covers out there. The intention behind the uniform shifts was certainly to provide a greater sense of belonging, not a reduced sense.