But if you run any proprietary system, yes they are spying on you, maybe even if you disable what setting you can find. You can tape the camara, but the mic ? I think the only option is to disable the mic in the BIOS.

If you really care about spying, you really should be on Linux or a BSD. IMO, tinfoil hat people should be on OpenBSD, they disable the cam and mic at the OS level and does not have bluetooth at all. FWIW, I still believe bluetooth is a cesspool of security issues.

Now also assume that you need data to train the robots and that you have a perspective that visual data will eventually be good enough to capture fine grained movement

So how do you go about capturing that data at the largest scale as fast as possible?

You give people an incentive to wear egocentric video cameras all day so that you can capture 100% of the data and actions from humans as they go through their life in order to transfer it to policy rollouts

Ultimately artificial intelligence is about transferring action policies from humans to machines and the fastest way to do that is to have 100% surveillance of a person

if people actively sign up for that that’s about as good as it gets

After all, as the owner of massive social networks, they already have plenty of cleaner, public data that has way more associated labels, like captions, comments, viewer engagement data, and that way they would avoid another data scandal. It's like how people think the Facebook app is secretly recording their microphone, even though their behavior is already obvious through just their and their friends' app engagement. The point of the glasses is to share your footage online, so the recordings would end up public anyways without Meta needing to do anything sneaky.