A Rate cut won’t move T-Bill yields or mortgage-Treasury risk premiums much. In that sense, it won’t help. OTOH, if the fed were not to cut rates, you’d probably see yields (possibly-recession fears would offset) and risk premiums (for sure) rise. In that sense, the cut will help.
I expect the Fed, and quasi bailout moves announced this week to have small “beneficial” (if all you care about are housing prices)impacts.
A strong headwind is enough to slow down a FAST moving freight train a bit, but not enough to stop it.