So first off it targets women getting cosmetic surgery and not really men getting them, since societally one is more accepted than the other. (Hair transplant vs boob job). The societal pressure to look a certain ideal is much higher on women than on men, and the ridicule women receive for surgeries done is disproportionally higher. So simply hiding behind "I meant all people not just women" when you very explicitly made fun of a (fictional) woman getting cosmetic surgery is just retrofitting a defense.

Secondly, presenting it as a generational thing presents it as just that, not as a wealth inequality thing.

Thirdly, body modifications (tattoos, piercings and surgeries) should not be ridiculed or shamed. They are part of how someone chooses to present themselves to the world and everyone should be free to do that just how they want. It doesn't matter how misguided you think it might be, not your body not your say. This ties neatly into fighting the transphobic idea that "any surgery will look fake and trans women can always be 'clocked'".

I wrote more about the misogyny reinforced by "haha plastic surgery is for dumb bimbos" here: https://lemmy.blahaj.zone/comment/15796191