1·
7 days agoI don’t think that is how it works. For example I don’t think you can get google security update for older android without updating the whole system. there were monthly google security update that are going to become less frequent.
Also I think the part that stops the apk installation (those not signed with signature in google database) are checked by google play services and that is installed in background which is the result of project treble and mainline that google implemented for modular updates without rom update. so you probably can’t stop google from doing this policy even if you stay on older ROMs.
if you mean the most secure desktop? then linux is not. not by a long shot.
use windows.
https://madaidans-insecurities.github.io/security-privacy-advice.html#desktop-os
https://madaidans-insecurities.github.io/linux.html
if you mean most most free, linux it is. personally I use linux.