"Right, but NFTs don't solve those, either. In a dispute between the court and the blockchain, the court wins."

1) In contracts, you can add a clause that mandates a dispute-resolution process that must take place before either side goes to real courts. These could be codified into the blockchain contracts. If that process is well run, I assume the court will have no reason to over-rule it.

2) In blockchain matters, is there a distinct party to file against? Where there is, do you know who they are? And are they in the same jurisdiction as you?