A few notes, quite anecdotal, from my own personal observations of trends. Zoomers, as a group, don't DO anything. This has been exacerbated by the lockdowns/online classes recently, but existed as a trend beforehand as well. By this I mean that a significant percentage of them spend most of their waking time scrolling, watching videos or streamers, and perhaps occasionally playing a mobile game. They don't go out, they don't socialize or date in the traditional sense, they don't even play video games really, perhaps watch a streamer game. The idea of a hobby or interest, even in the non-dedicated normie sense, is apparently quite foreign to them.
Their fathers, if present at all, are disinterested bugman type late boomers or x ers who failed to teach them anything practical. They exist not even virtually in the way that we do, but as purely mindless consumers taking in what the algorithm feeds them. Inability to cook even basic food or perform routine household or vehicle maintenance is common. Associated with this is a strong urban/rural divide, with the ruralite z much more likely to take part in actual physical activities and interests.
If a nihilism is present in zoomers, it's quite different than the gay, angsty cope of the millennial and x er, being more of a general attitude of putting in the absolute minimum possible effort at all times, as it would be pointless and a waste anyway. I believe that unlike previous generations many, possibly a majority of zoomers would be neets if possible, even if there was profitable employment to be found.
A sort of social speciation has occurred between male and female Z, probably a greater difference in worldview between them any previous generation. I'll let others comment on that. Obesity or unhealthy gangly boniness seem to be the prevailing body types among male z.
Virtually all of z humor is downstream from our circles, as has been mentioned already, if a male zoomer has politics, they're primarily aesthetically motivated and at one end or the other, with little in between. While the explosion of various homosexual, etc., perversions is real, much of it is also a sort of trend hopping (by females) and defense mechanism by de-facto sexually normal zoomers, as being white and sexually normal is a significant disadvantage in the current public school regime.