Now, GIMP could be way better at what it does and I don't even think their biggest issue is their UI, as they have done some work on it. But for the recent interactions I had about it regarding some tweet from Snowden about GIMP on a somewhat recent thread on r/linux (nice place to have some decent discussion btw, I was banned from it), it seems not only devs don't have the funds, they don't want GIMP to be anymore successful. Like, I got a fair amount of vitriol just for mentioning that it was so weird that GIMP offers no tools to draw geometric shapes - you have to fill circular/rectangular selections to do so (!), when in pretty much every other image editor there are specific tools to draw rectangles, circles, ovals and the like.