No, Qubes hasn't written the TLS client handshake proxy to enforce the policy. Out of scope. That's what I meant, and it's just one example of the things above

No, Qubes hasn't written the TLS client handshake proxy to enforce the policy. Out of scope. That's what I meant, and it's just one example of the things above the level of "Qubes" or "Oz" plumbing that makes Subgraph OS what it is.