The Android Debug Bridge, or ADB for short, is a handy development tool to interface with your phone for debugging and testing. Through ADB, developers and power users can access Android’s built-in Linux command line shell with greater privileges than user-installed apps. Notably, the ADB shell priv...
No. Kinda..some apps can auto update via an alternative client but apps that target old android versions for compatibility purposes and to allow people to keep using their old phones aren't allowed to auto update and instead require to be installed manually. Basically, a problem to lot open source apps since they want to serve the maximum of users, not force them to buy a new phone.
I don't know at which version this start affecting the app but knowing Google it's some bullshit random version like 9 or something.