If mortgage rates were still 5% that would be true, but with 30 years as low as 2.5% right now, the total monthly cost of a mortgage hasn’t changed a whole heck of a lot from a year ago. I also see no evidence an average family cannot afford to buy a home - probably true in SF, LA, NYC, etc, but not true in most of the country. A $300k home with 20% down, with property taxes and insurance is about $1,200/month. $14k/year divided by $65k median household income is about 22% of income on housing, which is not far from historical average.
How many people working can pay $100K downpayment on a home?
That right there is the problem.