Earlier quoted context omitted.
In the thought experiment of a true anarchy, how do you ultimately enforce the off-chain part of a transaction? If BTC is traded for goods or services, how do you enforce that the goods and services have been sufficiently provided?
If your argument is that decentralized ledger technologies cannot in their current state or perhaps ever entirely replace governments then I guess any reasonable person will just have to give that to you. And I doubt as many "crypto evangelicals" would actually argue with you on this.
Of course, that’s just the simple, “immutable logic” kind of smart contracts. The “updatable policy” kind of smart contracts are really just a way to encode and implement a legal system. (See: the regulation model in security tokens.)