I for one have never used Photoshop but I used to use Gimp occasionally for some semi-technical markup and annotation. I remember being baffled by how to make a hollow circle, as opposed to a solid one. I kept forgetting the process so I had to look it up every time. Nowadays I just use canva since I don’t want to analyse menus and tool options every time. I don’t have to use Photoshop to say that Gimp’s UI can be better. Anyway, I also use Audacity extensively and although it’s not as outstanding of a case as Gimp, the older versions were a pain, nowadays it’s much better but still plenty to improve (I have not used other audio editing softwares)

Then again I learn software by intuition and exploring menus (rarely I go to read the manual, as do majority of the people I imagine), if I was taught how to use it by someone like you, maybe things would be different, but I doubt that’s how most people interact with software.