@midgebabe
But the idea that we have to control something that is very superficial is even worse
I'm not sure what is being "controlled" though.
Most people have some opportunity to choose clothes that they like, at least to an extent.
Most people have limits on that, too. Which come from financial means, prescribed things like uniforms or dress codes, and social customs.
In our culture, which already offers far more variation than most as far as clothing choices, you can often (but not always) bend these expectations, or even subvert them, without a real penalty.
Usually, when people do bend and subvert thm, it's not because they have some burning desire to dress that way, or even any more because there is some really unfair disadvantageous expectation. (I'd say the main example of that is very sexualised women's clothing but it is possible to avoid those unless perhaps you are in the entertainment industry.)
People choose to bend and subvert the (rather lax) rules around clothing because they want to make a point about the rules, or be seen to be edgy. So that is also a choice, to corollary being that if you do it, people might think you have a particular attitude to rules.
There is a ton of flexibility in all of this. Unless a child is poor, they are not going to have a whole lot of experience with people telling them they need to wear x. y, or , and just get over themselves. School uniforms are by far going to be the most universal experience of that.
Then you have these parents telling their kids, oh, you are being oppressed by being forced to wear a uniform, by the fact that there is a dress code that disallows showing your belly button at school, by the social convention that men don't wear skirts. Somehow these things mean you can't express your true self.
It's no wonder you have a bunch of kids that think their preference for more culturally masculine or feminine clothing means something significant about their "identity", and it will damage them if they aren't able to indulge it whenever they like.
Having to make do with a certain amount of practicality and social conventions which we all know could be different, and realising that you are still ok is a generally positive experience in terms of maturity. And yes, social conventions may change, but there will always be social conventions - there isn't some utopia where we don't live within that kind of cultural environment.