It's two different things, really.
One is that there is a housing crisis, and that is a major political issue.
The other is that given there is a housing crisis, anyone young person has to make decisions in that situation.
And that won't get everyone a house, and it will still be crap for some people, but do the best you can in the crap circumstances we have.
So you can get threads on here about people not encouraging ordinary kids to go to Oxford. Well, no, DS did not apply to Oxford, LSE, Cambridge etc because they are really expensive places to live, and why start building connections to places like that were you will probably never be able to buy a house?
So apply to Northern universities and Welsh ones.
Choose a career you can do in cheaper places. Choose a more boring, crappier job that you can get in cheaper places.
Don't go to university, or go on a shorter course.
And people are making these choices all the time - live at home at uni, don't go, limit your choices.
And yes, it is destroying social mobility. But if you want a little house and kids in your twenties, those are the choices you make.