Earlier quoted context omitted.
Gimp is a great example. If you look up screenshots from the late 90s of gimp 1.0 you think "Hey wow, that looks pretty great! I know where the buttons are, I can quickly scan them and it's clear what they do! It isn't a grey on grey tiny soup, they are distinct and clear, this is great. When is this version shipping? It fixes everything!" Apparently almost everyone agrees but somehow we're still going the wrong way,…
Krita matured nicely over the years and last time I found it quite easy to use. UI is hard. It got replaced by "UX", but nobody agrees what that really is. So it boils down to whatever impracticality designers dream up. When UI was easy, there were real research, data backing up claims of improvements and laid down rules to enforce some consistency. This became "unfashionable" and was removed.
Now all you have to do is stick a bone through your beard and pronounce yourself a "UX Guru" and off you go.