The best house of the 70s would be laughably bad today. Poor climate control, sub-standard insulation, smaller rooms, etc. Going back even further (to 'the greatest generation' for example) housing is even more primitive.

Housing, like cars, phones, and almost everything else, gets better as we go along. The best cars of the 80s are terrible compared to the lowest price of today's cars. Phones? Not even worth talking about.

Young adults of today do have some disadvantages, that's true. But the goods they can acquire are better than ever before (but not as good as tomorrow's).