Earlier quoted context omitted.
My guess is the reason they haven’t overhauled the UI is they build GIMP for themselves and their own mental model. Having used Photoshop forever, I can’t make the transition to GIMP because it feels unintuitive. Unless Linux is your desktop OS, there are plenty of other cheaper options (than Photoshop), for example Pixelmator (OS X) or Paint.NET (Windows) that feel way more familiar.
Paint.NET is by far the best the best picture editor I've seen. Not nearly as feature-reach as GIMP or Photoshop so not an option for graphics professionals but for casual usage - it's bloody amazing, extremely intuitive in particular. I use Pinta on Linux and Mac - it's not as great as the original Paint.NET but still very handy while GIMP is like vim - you have to study it before you can use it (and you are going t…
That's quite a statement. I would only say it with the following qualifiers:
Paint.NET is by far the best free picture editor I've seen for Windows.
I've seen plenty of non-free (some very affordable, some less so) editors for Mac and Windows that are way better than Paint.NET.