This was my thought as well. Unix was built from the ground up as an OS to support researchers and engineers. Later people adapted it to desktop use. Windows was built to be easy to use for the average person from much earlier on. I don’t think anyone claiming that it’s not easier to use than Linux has used it lately or is being completely honest.
Fortunately, today the gap is really small compared to what it was IMO. Compatibility with games has gotten really good which pretty much leaves behind the proprietary professional apps in terms of raw functionality. With Microsoft testing the limits of how much they can exploit their user base, I think we’ll see slow but steady growth in the desktop Linux space.
Yeah this is a reasonable take. GIMP has its core set of users, and, even though I could be wrong about this, I suspect that they like the UI as it is. They’re not beholden to making the most generalized image editing software for Linux.