Background-Story: I did a "flatpak update" on a remote client and every package wants the PW for downloading and for installing again. I had to enter the password like 30 times or more.
Really weird thing is, distros and flathub kinda pushes users to do system wide installs while most of the packages can work and get updated per user.
They are pushing the thing which made Windows almost impossible to use without an administrator user.
A dramatic example would be gnu guix, almost never requires root for updates or installs. It is also usable by normal users. From GNU... :-)