Not wanting in any way to get involved in whether or not young people have had it easy - or in what ways it might have been easier - but on a point of order has there ever been a time when large numbers of U30s owned their own property . Yes, I know some always have, through inheritance, bank-of-mum-and-dad, or an exceptionally good job - but anywhere even close to being a majority? I don't think so!
You are probably right that under 30s haven't been homeowners in large numbers. I think the difference is the percentage of under 30s expecting to become homeowners in their 30s has dropped.
This point all came from the OP suggesting under 30s were in for a shock because of upcoming increases to mortgage payments (amongst other things), and perhaps missing the point that mortgage rate increases don't affect those without mortgages (unless of course there is a knock on effect on rent).