Are you suggesting that a company where ads are a major revenue source going to release a product that doesn't spy on you?

No, but their product might have an option to opt-out via some hard hoops.

I really wish Glass-style HMDs had taken off... I've built my own, but it's useless if the sun is out at all. I just want something unobtrusive and inexpensive that I can drive with a real computer.

I have a glass enterprise edition and it's ok with the sun out. But unobtrusive it is not. I'd rather have something like the Vuzix Blade.

The device is completely abandoned by google by the way, but at least it can run normal Android apps so it can still be useful.

Vuzix Blade would be fine too, just something that has a display you can look at when you want to and ignore when you don't. The Blade is way too damn expensive, though.

Yes it is :(

I got the glass second-hand super cheap but that was way too expensive new as well.