If it protects the user against a backdoor hidden deep in some fringe dependency, maybe "we" want anti-klepto.

Isn't it marvelous that the deterministic nature of Bitcoin can let a companion app verify a hardware wallet is following the protocol in a non-leaking way? I find this unbelievable and would want that for my hardware wallet to sleep sound at night, knowing that nobody can exfiltrate keys. No supplier. No library provider. No engineer around me. Not even with a gun to their head they could succeed.