Maybe if schools chose a uniform that the kids actually like and feel comfortable wearing there wouldn’t be these issues.
My girls have both left secondary school now but while they were there, the uniform requirements got more and more convoluted as time went on.
When they started there it was sensible - black trousers/a line skirts with a white shirt, black V neck jumper and a grey blazer - all of which you could buy from anywhere, and just buy a logo patch from school to sew onto the blazer.
Then the year after my youngest started it became an academy and the uniform changed and it all got more and more ridiculous.
The black, A line skirt became an ugly tartan kilt that could only be bought from the school, which had to be a certain length - except size availability was rubbish and the correct size waistband for my DDs wasn’t long enough
Black trousers - the legs had to be a minimum width all the way down, anything that tapered at the ankle, even very slightly, meant isolation.
The grey blazer had to have striped lining (only available from the school uniform shop of course) because it meant staff could see if sleeves had been rolled turned up - I mean, god forbid anyone rolled their sleeves up. Couldn’t be removed, even in blazing heat, without permission from the class teacher. One memorable year, school staff were sent out around the streets at home time to make sure no one removed the bloody thing on their way home.
On the flip side, in winter, they were not allowed to wear coats to school until the permission text was sent out by the head.
I did my bit, supported the school, purchased said uniform, made sure they left the house suitably attired, but did think it was absolutely ridiculous.
As the parent of a SEN child , who spent an inordinate amount of time sorting shit out and fighting for stuff I shouldn’t have to fight for, I always thought they would have had more important things to worry about than whether DD’s blazer sleeves were rolled up, but apparently not.
One of mine is now at uni, the other at college. Both managing to learn stuff despite being allowed to choose their own clothing.