That's a fairly lousy interpretation of the show anyway. The show's about standing up and above the crowd even at the cost of being exposed to judgement and ridicule.

Both Ryuko and Satsuki have ambitions that go above and beyond those around them and, like in real life, doing this puts them out there for attention and judgement that they might not otherwise want. This doesn't necessarily have to be a sexual kind of attention, but just look at anybody who puts their thoughts and opinions out there and see the crap foisted on them as a result for an example. The show uses the Kamui as a metaphor for not being afraid to accept judgement and ridicule for being true to what you believe and want in life, even if it means exposing yourself. That's what it's talking about when it refers to "getting naked." The regular uniforms are plain and covering because the characters wearing them are just following along, and not putting themselves out there to follow their own aspirations.

Now, I know a lot of people still don't like the show because of all the imagery and that's okay. Nobody's wrong for being squicked by it and choosing not to watch it, but the show's aiming for more than just being fetishist and fanservicey.