I mean, there’s something to be said about adhering to an industry standard. Of course no project has to do so if they don’t want to, but people trying to get on with their work don’t want to spend a bunch of time relearning everything. I think Blender really thrived when they loosened up a little on their ideas of what a workflow should be and gave people industry standard options out of the gate.
Whether we like it or not, GIMP isn’t going to be most people’s first experience with image manipulation. Whether they had a free PS license through school/work, had a subscription at some point, or once got it through ahem alternative means, people will be coming into GIMP with certain expectation of what the workflow should look like and will get frustrated pretty quickly.
I honestly learned it just because I hated having to change hand position to use a mouse.