This is a lot of very confident assertions.

> you do decide to actively go against it for decades because you like doing things your way

Perhaps there's a good reason why a developer or a group of developers decide to do things a certain way.

> This is why Krita is sweeping the floor with gimp

Aside from the fact that these programs are intended for pretty different things, the impression I have is that GIMP has a much larger install-base than Krita and more people are aware of it. Far from "sweeping the floor".

> GNOME is hanging on by nature of being the default

Or perhaps some people (and enterprises) want a polished OOTB desktop experience without having to deal with KDE's bugs and Windows-like design language. There are plenty of GNOME installs on Arch Linux for example, where you can't speak of any "defaults" with regards to desktop environments.[0]

[0] https://pkgstats.archlinux.de/fun/Desktop%20Environments/cur...