Sometimes the “offense” that guys feel over guys wearing skirts and stuff is definitely from closeted thoughts or outright self-hate, but that’s not necessarily the case. The underlying issue is they view clothing as gendered in the first place.
Style shouldn’t be associated with sexual attraction implicitly, but it does for stupid people, and many people are stupid. Especially horny guys thinking with the wrong head.
The mere presence of a particular article turns them on, and they project that to intent. It is entirely subjective if they get upset at popping a boner, or upset that a male would use clothing that traditionally makes a female sexy. It requires the dumb person to view another’s clothing choice as a direct expression to them, but stupid people taking things personally that aren’t personal should be preeeetty easy to understand!
It’s a lesser mindset, male-focused version of, “what was she wearing?” after an SA event. Just because I’m trying to look pretty and you like some part of that, I am still most definitely not coming on to you by wearing it.