The list you linked includes things like: web access for bluetooth, MIDI, and USB devices. These are very fringe use cases that quite frankly shouldn't be accessible from a random website.
The rest of these sound like extra bits of fingerprintable entropy here and there. Like, in no way will a website knowing how much RAM I have will improve my experience, but it'll help add a few bits of data to my web advertising fingerprints. Magnetometers and battery status would absolutely be fingerprintable; individual device characteristics would be unavoidably measurable.
The page you linked to actually lists all this out, and that should be enough to convince you that these standards shouldn't be implemented.
The rest of these sound like extra bits of fingerprintable entropy here and there. Like, in no way will a website knowing how much RAM I have will improve my experience, but it'll help add a few bits of data to my web advertising fingerprints. Magnetometers and battery status would absolutely be fingerprintable; individual device characteristics would be unavoidably measurable.
The page you linked to actually lists all this out, and that should be enough to convince you that these standards shouldn't be implemented.