This is a fallacy. You're born "short housing", because you need somewhere to live. Owning a house is just cancelling out your natural short position. If you sell the house, you're short again. You might make a "profit" on the house if the market went up, but that just means you'll be buying another house in the new more expensive market.
If you want to upsize, you're actually better off if the market goes down, because then to get a house that is X% more expensive requires less additional capital.