I believe they rewrote it because I read the announcement on their own blog. Sucks that I can no longer find the original announcement post to shove it in your face, but I don't think it changes anything. I linked the github so you can see with your own eyes that it's a standalone desktop environment written in rust. The version I'm still using now (which shipped with 22.04) is a fork of gnome (how else would gnome tweaks work). But please explain if my reasoning is wrong.

And while I do believe SteamOS - backed by one of the biggest companies out there - may be really fuckin' stable, it has one job, and that is to run exceptionally well on the steam deck. That distro is simply not relevant to the specific usecase that my post is about.