This says: "Any user can affect the installed apps for all users."
What does this mean?
I was concerned as to whether malware or any account from one user could affect anything from the other user. The previous statement: "No user has access to the app data of another user." seems to contradict this. In that a virus or other malicious application cannot affect the app data of another user. But if any user can install any application on all users, wouldn't this pose a security risk?
This seems to be contradicted by the fact that on a secondary user profile, when I go to Settings > Apps I can only see the apps for this secondary user. I cannot see any app that I installed on the primary user.
On the Primary user profile, when I navigate to "/storage/emulated", I cannot see any folders at all, let alone the one for this user profile (I think this is where user profiles are stored). This suggests that the contents of the Secondary user profile are not viewable by the Primary User Profile.
If you want to know what a Primary or Secondary profile is, refer to the link under "User types".