Upvoting you, because I actually use Gimp. While it has its headaches, for photo editing it's still the best after Photoshop.

(Yes, still better than Krita).

But this is all a digression, as Lightroom/Darktable are not Photoshop/Gimp replacements. Not even the same category.

Yeah who needs the best software for hobbyist editing? $20/mo to Adobe forever until they jack it up even more, no thanks.

Darktable is top class.