GIMP is an odd project, one that I'm not sure is actually being held back by money, considering they've been sitting on a donation of bitcoin since 2014 that now amounts to 1.3 million, and just... haven't used it, at all?
I think it should be clarified that GIMP's structure isn't able to make use of donations to GIMP as a single entity. Edit: or at least wasn't, I hear they can now.
I agree that Krita is more promising though, I switched to Krita years ago and have never looked back.
Literally every meme I've ever made was done in GIMP. I can say that the software needs non-destructive editing that applies to transforming layers. So far there's only non-destructive effects on the layers, but discarding 20 years of work because the software is not a 1:1 copy of Photoshop seems silly.