Wow. I could've sworn Krita was only around 6 years old. I've only very recently started hearing about it.
There seems to be a phenomena I observe in the FOSS community where we reflexively respond to suggestions despite them being far beneath their FOSS alternatives. Only after digging or running into issues, do you find the good stuff. Brand name -> Low quality, highly mentioned -> High quality, rarely mentioned Photoshop-> GIMP -> Krita Windows -> Debian-family/Ubuntu/Mint -> Fedora I almost feel like a religious Zealo…
A frequent issue with FOSS is that they can handle a variety of edge cases because some technical person needed it once and went through the trouble of implementing it, but they offer a subpar experience at basic cases.
They'll add a feature because it was in the bug tracker and then say "it's done," and you need to hold a committee for 6 months in the forum to change anything in it. Meanwhile a proprietary app made by 1 person will gain 30 different niceties to the basic feature in 1 week.
It's just very hard to imagine how an application that existed for 20 years can't select multiple layers at once or reorder its brushes. It almost feels like abandonware at this point, despite them getting new features from time to time.