I might be mistaken about cars requiring no input, but isn't just steering sensing a problem? The car does not know if it is you or a weight on the steering wheel. Or if you are on your phone touching the wheel with your knee.

According to the NHTSA, Tesla was forced to enable driver monitoring via a camera because sensing driver steering input was insufficient.

So, without a doubt, 10s of millions of cars have "insufficient" driver monitoring while having "level 2" capability. Should those cars not be recalled and the feature be disabled (or updated to more aggressive monitoring if appropriate hardware exists)?

To be clear, I fully support driver monitoring for ADAS to whatever extent regulations require. But picking and choosing who to enforce the rules suggests they aren't working for the general public's best interest.

The NHTSA insisted that Tesla switch to camera monitoring because Tesla repeatedly monkeyed with the nag interval via OTA software pushes. All the other manufacturers, except Tesla, complied with NHTSA's 2017 rule on the issue.