But they can make a headrests that do that. My car’s headrests can tilt forward or back depending on your preference. And it was made in the 2010’s, so it’s not like this is a super old, or new, development.
Making them adjustable makes the most sense as it allows people to adjust it to what they need, rather than just designing for the average person. The seats themselves are adjustable; you can slide them forward and back, up and down, some even tilt them forward or back. The headrests should be no different.
It doesn’t, but with these apps, you can see what information they send back to their servers (if any). If there is no info getting sent back to any servers, then there’s nothing a subpoena can do since there’s no info to subpoena. You can’t obtain info that just isn’t there.