The inflation is still very low and practically 0 in short term and buying/selling property doesn't take that long actually. People don't buy and sell all the time when they need money, they use financial instruments(property ownership unlocks lots of great financial instruments). Nobody is buying BTC against inflation, it's simply too volatile. You can't know when Musk will tweet what, central banks and property laws and taxes on the other hand are slow moving and predictable.