With the Steam Frame and Steam Machine launching with SteamOS Linux this year, we’re going to again see a nice boost for Flatpaks and desktop Linux overall.
Linux has, historically, been quite messy when it comes to software distribution. We have various distribution-specific packaging formats like .deb (Debian / Ubuntu), .rpm (Fedora) and the list just goes on and on. Canonical also went their own way with Ubuntu for the likes of Snap, but the real winner is going to end up being Flatpak and the main Flathub store.
It’s a feature to have multiple environments. Otherwise all apps would have to stay on an old version with the lowest common dependency versions.