The fact that Valve ships the Steam Deck with a read only root managed by ostree and user apps installable via Flatpak to me shows the direction of future Linux desktop, and I welcome it wholeheartedly. I am done with distro managed packages for desktop apps, custom patches and the impossibility to ship closed source software on Linux because it's a mess.

Flatpak in my book rocks, and it's ahead of macOS DMG files and light years ahead of the Windows .exe downloaded from the Internet strategy.