Despite this not being FOSS like GIMP, I think it's great that there is at least some very viable alternative that can run on Linux even with some workaround, for free (besides Photopea).
Free Photoshop in a browser. Some modest ads, nothing intrusive. Ublock is stopping those for now. I'd be glad to pay for such fine software, maybe I'd pay the $5/mo. were I a pro.