Windows has much better forward and backward compatibility than Linux, that’s why 10 year old Windows is still fine. 10 year old Linux on the other side just means nothing modern will work on it. That’s really only usable in extreme edge cases. Flatpak and Snap somewhat address this, but that also puts you back into the forced-upgrade treadmill, as Flatpak runtimes don’t have LTS support (not sure how Snap handles this).
X11 is an multiple decade old dinosaur, the developer decided it was growing too complex and no longer representing how graphics are done on modern systems and decided a rewrite. While doing so they decided to simplify some things along the way and in doing so they drastically overshoot their target and removed tons of fundamental functions that was present in X11 (stuff like being able to take screenshots, window manager, etc.). Some of that is slowly getting reimplemented and Wayland is getting closer to actually being a feature-parity X11 replacement, but it’s also taken 15 years and is still not done. The whole drama is the conflict between people wanting it as default and the other group of people for which it simply doesn’t work in its current state.