Shitty magazines like cosmo and teen people for one. All those weird fashion blogs and celebrity media bullshit. Plus all the ethically dubious ways fashion brands market their products to get people to buy more clothes.
Then it’s reinforced by their peers and sometimes family.
Sadly marketing and advertising has steered cultural norms for way longer than it should.
Was this some iteration of “straight men don’t care about aesthetics, they care about function” type of thing??
Because that’s such a boring existence. I’m sorry your dad hates aesthetics. I hope you’ve found your own tastes despite him.