> You're saying that a microcontroller should never have a certain feature because you don't like how it has been implemented by a single company.
It's not the implementation. I don't want hardware to ever be able to permanently make itself less useful, no matter how it's done or what it's being used for.
You're making an argument that PROM, WORM, efuses, etc all shouldn't be allowed to exist. They're used for all sorts of features, not just security. You might do well to apply the lesson of Chesterton's Fence before you call for a ban on things you don't actually understand.
For legitimate cases of write-once media, it should be legal if and only if it's separate from the rest of the device and easily replaceable (e.g., a socketed chip or a DVD+R). Anywhere that write-once media is permanently attached to something else, it inevitably ends up being used for evil.
It's not the implementation. I don't want hardware to ever be able to permanently make itself less useful, no matter how it's done or what it's being used for.