I disagree with the “complaining about young people” line having coolness increase proportionally with age: when I was a young adult, I often joked about kids these days in a way that seemed to get a lot of laughs. The humour was in the fact that I was a young person talking about young people as if I wasn’t one of them (and beneath that was me making light of the text that, likely due to being autistic, I have always felt isolated from my peer group).

Anyway, I got good at leveraging this for humour, but as I aged, the joke potential expired: I was too old for there to be any irony in saying “kids these days”, but not old enough for it to be cool to complain about young people.

On the bright side, I am sufficiently old to be able to torment young people by misusing their slang. It’s most likely effective if you use the slang in a mostly right way, so I enjoy the challenge of needing to actually understand correct usage of new slang. Amusingly, studying current slang as an outsider is a skill I’m well versed in, given that I had to do this even when I was young.