Interesting that, after the Steam Deck, the most used is #ArchLinux
Veteran Linux users moved to Arch and that's what they use? They moved to Arch for gaming specifically? Gamers coming from Windows are competent and went straight to Arch? ...
Then the distro-agnostic Flatpak on its way to become the preferred option.
And relegated to a fourth place, with Mint about to surpass it, Ubuntu, the distro once blessed by Valve. That train is gone now.