> there were also no stories of adult children getting married and living with their spouse/children with their elderly parents

That used to be common arrangement.

Like, fun fact, Rosa Parks has such arrangement. On darker side, John Brown sons with families lived with him, were totally ruled by him.

Interesting anecdotes, but what does this have to do with the fact that the journo apparently couldn't find a single person/family who was seeking this sort of setup, or who let alone taking it to the next level? They were all just single people living at home, with no spouse or kids.