You'd think so, but from his own account he's not. Pre Asahi he used Fedora because it was easy to get working and he found Debian too hard to install. Could just be dry Finnish humour.
Ubuntu/Debian/Fedora and others are great if they work out of the box. As soon as some proprietary GPU or other driver gets involved it can get painful. I recently installed Fedora on latest Thinkpad with dedicated Nvidia GPU and could not get it to work properly on Fedora. Driver crashed and did not load during startup. After trying a bit I switched to Arch and while the initial setup took longer, everything works and I can actually update it without requiring to add some shady 3rd party repos or compiling essential packages after each update manually myself.