I agree. I have become more amenable to things like Flatpak or Podman/Docker to keep the base system from being cluttered up with weird dependencies, but for the most part it doesn’t seem like there’s a huge upside to going full atomic if you’re already comfortable.
GNOME 3 introduced the current shell paradigm where you don’t really have a start menu but a variety of searches, integrated indicators, per-app desktops with a dock etc.
Before, it was far more conventional experience like Plasma/Windows/Cinnamon are now. GNOME 2 was forked to be the MATE desktop if you want to check it out.
John Carmack, author of the Doom engine, is a long time Linux user and for a while the policy was to open source the idTech engines once they had moved on.
However, Doom was hugely popular on its own before this, and was actually more pivotal for making Windows a gaming platform (over DOS).
The reason it runs everywhere is a combination of it’s huge popularity, it’s (now) open source and it’s generally low system requirements.
Intel has been struggling overall, and lately has been letting some of its Linux engineers go. Nothing absolutely fundamental has been affected yet (AFAICT) but I guess Clear Linux didn’t make the cut.