A wee bit of a difference in funding. There are alternatives to GIMP, not really as much for Blender. They cannot be compared. GIMP probably couldn’t afford a UI developer if they tried. You’re looking at least £3k pcm for someone who isn’t punishing themselves.
Do you want to tell me what sort of voodoo magic GIMP do to match the resources Blender get? Your opinions are based in feelings, not reality. You may hate GIMP, you may hate the UI, you may want the project to fail and take that mission as keyboard crusader, but it’s unfortunately just not a realistic position, but hey, your feelings can be unrealistic if they want to be. You can feel what you want. Some of us hate big corporations and injustice, others, it seems hate free software projects built by volunteers.