Comment It can be useful (Score 5, Interesting) 84
It can be useful for apps which are dropped by distributions. For example on Debian zenmap (gui version of nmap) is no more. The easiest way to get it is a flatpak.
A more important app for me was displaycal as I need a colour managed display for photo editing. It had become useless as hadn't made the transition from python2 to python3 and no longer worked. A flatpak version solved that very nicely for the period before a working version again became available in a distro repo.
I agree that it's pretty much pointless using flatpaks for apps easily available in the same versions in distro repos but for me it has been occasionally incredibly useful. It's also quite useful for trying out a different version of an app. For example maybe you run a stable distro and would prefer not to mix in testing or experimental packages.