Very good question, considering how abstract of a term "the market" is.

I suppose in a "normal market" if a surplus of supply exists affordability should increase as prices should decrease. That's Economics 101.

But in a market controlled by a monopoly/oligarchy, the price system is dictated by the recidivist whims of the super admins, rather than by the needs and desires of the user base or the physical reality of the resource(s) in question.

So in the current state of housing surplus, affordability has decreased as prices have increased.