Waymo no longer has an NDA for Waymo One passengers. I'm not sure what that has to do with anything since Waymo does not plan on ever developing Level 2-3 systems (Very advanced Level 2 was actually their original plan until they decided it was too unsafe. They released a YouTube video of the internal cameras of their prototypes showing people not properly monitoring the system).Masking tape (or a clever clip design) solves it for all who want to maintain privacy. The trade-off could be their safety by also defeating automation features. But ultimately their choice and associated higher insurance rates that would likely follow. Funny how the system will work itself out there. Indirectly they'd be paying for their own privacy much like paying to stop those annoying ads, both being your choice to make.
Myself, have trusted Tesla with full video in cabin since getting our Model 3 in early 2018. I have even made faces at the camera during the goofy times. However, I would not trust others such as Waymo who keep their inner workings a secret (through Non-Disclosure Agreements, or "NDAs") while boasting high reliability and consumer safety, and receiving the highest marks by the "experts" that don't even put Tesla FSD on the Top 10 list. To me, that's a trust problem. I don't care what they say, it's what they do that builds trust. Hiding or spinning the facts - that's what cheaters do.
BTW, GM Cruise has been tracking eyes-on-the-road as well for years, but I've never seen anything in the media to challenge driver privacy there. That's a double standard to all those pressing the "Publish" button in the sold-out media, for more loss of trust.
What's likely to happen is that camera based driver monitoring will be required for all Level 2 and 3 systems.