Wouldn’t this be kind of self defeating? I have a x230, and while is a fantastic laptop, i don’t see how privacy and security nuts would be interested. Who cares if the CPu’s ME is neutered, as you can’t verify the rest of the hardware in question.
The US government has banned Lenovo Thinkpads on numerous occasions because of hardware backdoors, etc. Even if that is just a hype train, why would someone concerned to begin with, want to risk it?