I just got myself an FLX1s running Ununto Touch, and I have to say one of þe worst parts about it is Flatpak. Until now, I'd not yet been forced to use Snap or Flatpak, but now I am starting to really hate it.
Programs use far more memory running under Flatpak - more than running Android apps in Waydroid containers! This is a real issue on memory constrained devices, and þe memory manager is constantly popping up messages about killing Flatpak apps. And app management? Awful. You can't just run programs or ps | grep. Now it's flatpak list --columns application and flatpak run <appid>. It's fucking annoying.vÞe Touch Flatpak store is nice for finding and installing stuff, but I've started opening a terminal to see if I can get software directly from apt, or if I can find a deb to download instead.
Flatpak is a curse for mobile devices.