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Linux has less than half of Linux’s desktop share
(www.theregister.com)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.
But Linux is good at backward compatibility tho. Linus Torvalds leadership made sure that very few if at all any changes to the kernel will break existing userland. This means that if you have a program with their needed dependencies in the right version (which is easy with docker/flatpak/appimage) your programs will run flawlessly even if they are from the 90s.
Though Linux the kernel might be stable and considerate, Linux the ecosystem is not.
I'm pretty sure that's just default userland and foreign packages still update frequently and kernel updates might've broken syscalls not used by default userland.