If I'm disabling my "black box", doesn't that seem like I assume I'm going to be at fault? I want mine functioning, same reason I have a dashcam. If I'm stupid, it's on me. If they are stupid, it's on them. I'd rather have the evidence then a he said/she said and I'm also willing to accept consequences for my decisions, even if they were bad ones.
That said, I'm not interested in the facial tracking stuff. I don't need my vehicle deciding I'm too sleepy or distracted to drive and tattling on me, which is where we're heading with this tech and the laws mandating it in the future.