People in their 20's today are no poorer than people in their 20's were 100 years ago. What has changed are people's values.
No, not so much. Inflation counts a LOT in this context.
Let's take for instance a near-in suburban area not far from where I live that happens to be a wonderland of Sears Kit homes. In 1922, the Sears
Langston (1300 sq.ft. 2 story American Foursquare with siding or stucco) cost $2025 shipped to your site, though you had to have it constructed when it arrived, and many people did the work themselves, but if you didn't, that would cost about $1300 extra because all the parts were pre-cut. You could buy a 1/4 acre to put it on for about $150 here. So, that's just about $3500 for the basic cost of the home at the time it was built. At the time, the average pay for a man in his mid-20s here, with a high school diploma, was $35/week, so just over $1800 annually. Social Security tax didn't exist at the time, so he took home a higher percentage than we do now, thus the avg. wage-earner could pay (by himself!) for that house in 3 years with plenty left over. (BTW, there was regular train and streetcar service there then, no need to own a car to get to work downtown. That's gone now.)
The neighborhood where all those Sears homes were built has a somewhat historical preservation bent, so there happen to be a whole lot of them still there, and most of them don't have a lot of changes, except probably having done a DIY basement finishing job and maybe building a garage out back. The average price for one of those homes a year ago, before the wild inflation hit, was just about $300,000. The majority of residents are just about 30, so a little older than our mythical guy from 1922, but the avg. income is $53K. With current taxes and insurance costs what they are, the average homeowner in that area, on one income, MIGHT manage to pay off the current purchase price in 8 years if he didn't have any other debt and threw pretty much everything at it, though he wouldn't be likely to do that.
In 1922, if you broke your arm, getting it set cost the average worker about 10 days' pay. Now, if you break your arm, it tends to cost about 40 days' pay to fix. The cost has essentially quadrupled in terms of how much work-time it takes to pay for the service.
The worst of the inflation has happened since 1974, costs rose rather slowly overall before then, but began to climb really steeply after the Energy crisis. The complaints then were a lot like the ones now, and for the first time married women became more likely to work for pay than not, to cover the increased cost of living. (I was in my early teens at the time; Moms going back to work was a huge issue in our neighborhood.)