In my opinion it is its limited suitability for (my) common image editing needs. I.e. add a white text with black border to an image.

But these are my requirements. The developers don’t have to cater to them if they don’t want to. I in turn can decide to not use the program or add the features I would like to see myself (It’s the former for me).

That is the way it is.

Edit: The name gimp was never an issue for me. There are far worse.