Adobe isn't an AI company so it stands to reason that the AI product they put out is crap. Photoshop and their other products while not "Crap" are certainly overpriced relative to opensource competitors.
I'm with you if you're talking about krita, GIMP doesn't even register as a blip, if you are comparing it with Photoshop.
Not opened but photopea.com and Affinity are the only best ones that come very close.