Educated twenty-somethings don't have much of a future to look forward to. They can't even afford the land to put an Accessory Dwelling Unit on, they'll have to rent one from an existing home owner. They will be living on a salary that stalled in the 90s, dealing with ever rising food and environmental costs, and subsisting in a world where we have a perma-health watch reducing their freedom to socialize.
[1] https://www.ft.com/content/1c7266b1-1fad-458e-8585-12dc3164f... https://nationalpost.com/news/postpandemic/its-only-the-end-... https://www.cnbc.com/2021/01/13/moderna-ceo-says-the-world-w... https://www.businessinsider.com/when-will-the-pandemic-end-d...
I guess 'dwelling' and 'unit' don't have all those connotations to you?
Why not just say 'home'? Even 'Accessory Home'.
Guess it comes down to your target audience. If you're market primarily consists of landlords looking to make rental income, ADU seems to fit the bill.