I don't think it is being a misogynist to discuss women and age and clothes. FGS lighten up!
Men are also accused of having bad taste- think of comb overs, toupees, Just For Men, flowery shirts that scream 'Im 60 but want to look 30', overly tight jeans (yes we know you have a lunchbox dear), pointy pointy shoes, spiky gelled hair on men 50+, etc etc.
It's not about age per se but women who are of a certain age cannot get away with the fashion faux pas of teens or women in their 20s.
If a woman wears something that is a disaster, fashion wise, for her shape, or whatever, it is a million times worse if she is also sporting crepey skin, badly applied fake tan, and has rolls of sagging flesh.
I understand other women saying they can wear what they want and they don't give a damn what anyone thinks. That's fine, Go ahead! But it's also completely unrealistic to think that in RL women will not look at you and have an opinion.
I think anyone who says they have no opinions at all about what other people wear are either being dishonest, or are of a tribe who genuinely has no interest in clothes and looking as good as they can.
I wear a short wool skirt in winter- about 3 inches above knee- with thick tights and boots. I have good legs. I am over 50. it's not about age but about what you look like. But some styles are always associated more with younger women because they are the ones who tend to wear them most. When I was young in the 1970s I'd wear skirts that just covered my knickers. I don't do that now but adapt the style to suit my age.
Equally I have friends who are younger than me who don't wear short skirts because they have what they think are 'bad legs' mainly fat or shapeless. (Their words not mine.)