I disagree, unless the R's get a trifecta (House, Senate, and POTUS) AND they want to rewrite the rules of the mortgage market, the Secondary Mortgage Market in place since 1968 will continue. Why? Because it subsidies the American homeowners by providing the lowest cost mortgage rates available, doesn't cost the government a dime, and keeps trillions off the federal government balance sheet.
Historically, the American real estate market has like any market is subject to booms and busts. Look at what happened in March 2020, one whiff of trouble and the primary mortgage market heads for the hills!