Pixeluvo can be useful on Linux, but based on the answers it’s better viewed as a companion editor than a full Photoshop replacement.

The main point is that “photo editing” can mean very different things: basic retouching, masking, compositing, portrait work, or advanced manipulation. Photoshop remains dominant because of its depth, workflow, feature set, and maturity, and none of the alternatives fully match that combination.

From the community feedback, Pixeluvo is considered a solid alternative in the same general space as GIMP for image manipulation, but not especially for RAW processing. A more practical Linux workflow is to use a dedicated RAW processor such as Darktable (or RawTherapee, which you already use) and pair it with Pixeluvo for layer-based edits or retouching.

So: if you need occasional editing on Linux, Pixeluvo may be worth considering, but not as a one-for-one Photoshop replacement. The better approach is to define the edits you actually need—retouching, masking, compositing, etc.—and choose tools based on that workflow rather than expecting a complete Photoshop-equivalent in one package.