Given this is just US-sourced, generation-on-generation data, and culturally, the US is pretty homogeneous (a few percent deviation). We're talking about 15 yea

Given this is just US-sourced, generation-on-generation data, and culturally, the US is pretty homogeneous (a few percent deviation). We're talking about 15 year windows so I wouldn't expect "culture" to change this fast, so I don't think your point applies. The headline advertised a colossal shift in "norm" over just ~15 years. Except that it's silly bait. Millennials are ~15y older than Gen Z. Of course more Zoomers are at their parents' home, they're practically still kids. This is accounted for further down the page at "what they did at 34/22". The increase is actually very slight. Far less than the headline suggests and immediately understandable based on the house price and rent trends as percentage of income. The headline, and the title here are bait.