Personally in my ideal world, we would distribute life's essentials in such a way as to be free at point of use, and then leave markets to handle things they're actually good at, like televisions and such.
They are a "a paragon of free markets" because their social safeties actually work. Housing probably isn't a stock to hoard like in the US, nor owned by private equity to treat as a business. so you can focus on more than just staying alive and do actual work/passions.
That makes it very far from a free market, even if the preexisting housing units are distributed on a fairly free market to the growing population.