That was the obvious issue with all the blockchain smart contract stuff that was getting pushed previously. Any time it interacts with the physical world the blockchain goes out the window the moment on someone on the ground decides they don’t agree with it. Your cryptographically signed deed means nothing and can’t evict someone off the land.
This comment ignores the cost of deploying government violence. In most of the world the government cannot "just" rubber hose every petty criminal on the basis that "he might have some crypto he's not telling us about". The people would not stand for it.
There is little room for a property or money transfer system that leaves no avenue for legal recourse. And the DAO fork made it crystal clear why it was always just window dressing on the same social consensus game.
The "violence" in that case is taking someone's money away so they might lose their home or starve.