Expecting that a piece of software undertakes an ambitious UI overhaul (which is no small feat) without one or both of those resources shows, to me, a lack of understanding.
As far as I know GIMP does not have a face for the press, does not organize conferences, has no one contacting businesses for funding. And it has an unfortunate joke name.
One is what you wrote - that it needs a product manager and tons of manhours just to do what's essentially a refactor. Not to mention that GIMP devs said that many UI changes would imply backend changes too, because of limitations. And they are working on those limitations, among other things. Second part of the point is that Adobe must have like 50 people work on Photoshop, and I guess even more when you consider the overlaps with their other products. Compare this to the active contributor number to GIMP.
The second point is that many people compare it to Photoshop like Photoshop is a gold standard of usability. It's just as a nightmare as GIMP if you're not used to it. So, it's not really GIMP's fault that people are used to something else.
The other factor is that Blender was always a tool by and for actual companies doing real commercial work and understands those needs. GIMP on the other started as a university project that got picked up the GNU project, and has always been more of a 'research' project.
We ask for rationalization of suggested changes. For some reason people think it's hostile.
I suppose they're probably constrained by what is possible with GTK? Basically it seems like Linux needs a better standard for user interfaces -- I can't think of a GTK app that doesn't have awkard position/spacing/layout issues.
There have actually been changes, and even if they aren't major, someone like me who has never used anything but GIMP was annoyed/slightly confused by them. I don't know what the issue with GIMP is, besides tools that Photoshop appears to have or has better implementations for. My impressions is that it is mostly Photoshop users, that are expecting something else, or am I mistaken?
I use GIMP for my (modest) editing needs, and I like it. But some of the behaviour is.... weird.
For example, if you've got a region selected and you use the flood fill tool, it will only fill pixels within that region. OK, that's logical enough, a tool only applies to selected pixels, right?
But if you've got a region selected and you use the move tool, it'll move the entire layer. If you want to move only the pixels in the selected region, you gotta convert it to a floating selection.
And after you've moved your floating selection, you want to select a different region to move, so you drag out a new selection. Not so fast, your floating region has now vanished. You gotta defloat the selection by selecting nothing. But you can't do that by choosing 'None' in the 'Select' menu, that's greyed out for some reason.
I'm sure these behaviours all make sense to a developer or expert user - but nobody's going to be telling their friends that GIMP is easy to pick up :)
I use both and I think GIMP is really usable and the UI isn't that bad. There were some changes though, so people should take a look at the latest version.
I mean, that's the theory, but I just find photo editing to be all around much more comfortable in Krita despite using GIMP for years.
Also one of Photoshop's main domain is digital painting (https://www.google.com/search?q=making+digital+painting+with...) which is what Krita focuses on. You don't really draw with Illustrator.
I meant Fresco instead of Illustrator, I forget the names of Adobe apps constantly.
The GIMP's weakness is color management.
I'd rather GIMP focused on adding features that Photoshop and other competitors have.