The Supply and Demand model makes some assumptions that are not always true (perfect competition, for example).

The model isn’t an ideology, it is just a model. But there are a lot of ideological beliefs around this stuff. Some people seem to think that all markets have perfect competition, or that the resulting efficient pricing is inherently always good.

Housing seems pretty far from perfect competition to me.

https://en.wikipedia.org/wiki/Perfect_competition#Idealizing...