But also, it's my understanding that Krita is not a photo editor, but rather a digital painting program; that any ability it has to edit photos is just because digital paintings are stored in the same file formats as digital photographs. Saying that Krita is unsuited for editing hundreds of photographs is analogous to saying that Visual Studio is unsuitable for creating ASCII art. There are other tools that you're supposed to use for those tasks. For editing hundreds of photographs, I understand Adobe's Lightroom or Bridge to be the intended tools, not Photoshop, nor any tools which are highly similar to Photoshop (GIMP, Krita, or otherwise).
Ok “2 clicks” is a misleading summary for moving down 6 menu items, and in the end this is an eternity compared to a modifier key.
Well, previous commenter just did it. So that just mean that your peremptory decrees are just that. Peremptory and not really universal.
The gimp project has provided a decent and useful tool for about 28 years whereas most new projects started from scratch die shortly. A from scratch rewrite would be a massive undertaking which might exceed the available resources/skills and might simply kill a useful project rather than producing a better one.
A glib well this guy did it is not an analysis.