@Sylvhem
I think this issue with software like GIMP (or well, GIMP specifically as I've tried it before) is that it just doesn't work intuitively.
GIMP imo is one of the most frustrating pieces of software to exist, where nothing ends up working the way you expect it to, or want it to. I don't mean this to be disrespectful to the people who work on it, it probably works wonderful for them and that's awesome, but not for a large group of people.
Why these AI clones are getting popular instead is because they basically look and work exactly like software people already know how to use. It's slop, but it's the slop they know.