GIMP is bad. If the problem was simply that it was "different to PS" then other apps like Krita and Affinity Photo would have the same reputation.
If a user goes looking for a tool or feature and it's not in the first place they look, that's a problem of "didn't really practice that much". If experienced people need to look up how to do basic operations and their reaction is "that's fucking stupid", then the software is bad.
To then say "well why don't you help the Dev team then" is insane. I'm not spending hundreds of hours digging GIMP out of bad design decisions when I could just use better software and I haven't seen any evidence that my PR would even be accepted.
Nobody needs excuses and apologism, they need Blender for image editing and GIMP just isn't that.