Earlier quoted context omitted.
Unfortunately, this 'not completely changing interface' has a side effect: it fails to evolve and become better. I am a long-time user of Inkscape (since 2007 at least), and it is sad how poor it looks now next to Sketch/Figma. Their vector tools are better, their layer tools are better. It's a million little things that make drawing a similar shape in Sketch 50x faster than in Inkscape.
This is what stops me of using it as a professional user: you can get things done, but the processes are more convoluted and less intuitive. The way Blender does it is near optimum in my eyes: not shying away from a major overhaul once in 5 years and aleays making sure it is really making things better.
Blender is one of the most successful projects out there, and assuming other projects could just 'do what Blender does' is ignoring some of the fundamental differences between Blender and smaller projects.