I don’t know. With the exception of a single feature, I’ve found photoshop better to use than GIMP. The one feature exception is GIMP’s wonderful “color to alpha” feature, and I always keep a gimp install around just for it.

Photoshop just seems easier to use, and more robust? With nicer effects, better filters, etc etc? At least for the features I tend to use. I’m not a professional by any means, but I tweak and composite and blend images a fair bit for my various hobbies (mostly ttrpgs).