[kpommerenke]

Taxpayers do not subsidize most mortgages in the US (with the exception of Ginnie Mae programs). Having a guarantee against default and fixed interest rates are two different things.

Government-sponsored enterprises (GSEs) like Fannie Mae and Freddie Mac guarantee conforming mortgages that they securitize against default. They might ultimately be backed by the US Treasury and thus US taxpayers (if not in theory, then in practice).

However, when inflation is high, the burden on the borrower of paying off their fixed-rate mortgage goes down (as their income increases faster over time). Therefore, the borrowers are less likely to default during high inflation. Thus, having the GSEs guarantee these mortgages is not a subsidy that protects middle class borrowers from inflation. High inflation essentially eliminates the need for the guarantee by itself.