I agree with you, although you were wrong about that specific Apple case. I don't trust "secure enclave" because it would be too easy for a TLA to infiltrate the chip foundry and backdoor the silicon. they can literally print money, circumvent the constitution using secret courts/NSL's, their resources are infinite. what would stop them from doing this ?

Even if you couldn't infiltrate the chip foundry, you could order a bunch of the chips, reverse engineer them, and in a few months, ship a duplicate with a neutered "enclave". Then interdict the shipment to the phone manufacturer (this isn't tinfoil, it's been done) and "supply" them with your version of the "secure enclave". There's no limit to this cat and mouse game.