I’ve been using arch for a while now and I always used Flatpaks for proprietary software that might do some creepy shit because Flatpaks are supposed to be sandboxed (e.g. Steam). And Flatpaks always worked flawlessly OOTB for me. AUR for things I trust. I’ve read on the internet how people prefer AUR over Flatpaks. Why? And how do y’all cope with waiting for all the AUR installed packages to rebuild after every update? Alacritty takes ages to build for me. Which is why I only update the AUR installed and built applications every 2 weeks.
Why would the app size be the lowest? I could maybe see that for one single AppImage (though I don’t expect a significant difference), but as soon as you have two or more apps, sharing dependencies would make Flatpaks smaller than AppImages.