Non-standard keyboard layouts. Custom kernels. Nah, I tried to rock a Chromebook but it sucks. What I really want is for arm or riscV to grow the fuck up and make an open pc platform. x86 wasn’t meant to be open from the beginning, but market forces and other reasons forced it open. We need the same thing for other architectures.
Check out Withings. Not open, but they are pretty good on respecting privacy and check the boxes you want. withings doesn’t do the full screen app stuff, but it’s a good watch with all the smart features.