My grandparents both droned on about that forever whenever we got into political discussions (i.e. usually me reminding my grandfather, complaining about unions, that he was longtime union member that benefitted hugely from his membership).
Meanwhile, I'm starting to approach "middle age" I guess and I'm far more radical and progressive than I was even when I was in college.
It's fuckin hilarious, because the sentiment reads more as code for, "As you get old you just become more of a selfish asshole who doesn't care about anyone else."
Which like, yeah, I can buy that as people get older they get increasingly selfish. As you say, just look at the fuckin boomers.