R@"fid02"#p116099 i appreciate your advice! Am I understanding correctly that impact from disabling a specific system component can extend outside of it's directly related activities?
Disabling pixel cam services did break stock camera app. Third party cam app open camera does not seem to be impacted. And as a precaution I always disable something first and use device for some time, once it is obvious that there are no negative consequences it is erased.
You are indeed correct that pixel camera services is not possible to disable from stock, i use app manager in wireless debugging mode for this. I appreciate reminder on possible adb usage security implications.
I always turn off the dev options in whole right after using the app manager, I assume that mitigates any further risks of adb, since it is not available anymore.
App manager helps keeping track of changes made to the system, by filtering uninstalled apps on the main page.