Well yeah did you think redditors would be the vanguard?
Boomers are a real thing because in a general sense they did well out of capitalism, at least in the sense of being upwardly mobile. They have a vested interest in protecting the status quo. And so they’ve fallen prey to all kinds of media propaganda because it ultimately serves their interests. And - again in a general sense - they have enormously greater wealth than other generations, which is just an objective/statistically provable fact. So analysis based around Boomers is not automatically bullshit.
There is no real difference in my experience (real world at least) between Millenials and gen z apart from small incidental cultural differences, which mostly just relate to gen z having become too online at an earlier age than Millenials did.
In so far as a lot of Millenials remain disappointingly radlib/ non-Marxist socialists, well it’s probably just an effect of being so close to the most materially successful generation that capitalism ever produced. They imagined their lives would be even better, and many of them are still wedded to the idea that we can turn back the clock to the old 60s style social democracy and save capitalism from itself.