Miguel, I could not agree more. I was trying to express that there is often a disconnect that begins outside of darktable. Not having a fundamental understanding of color and basic digital editing when trying to use a tool like darktable to edit pictures will always be less than what it could be. Given this common deficit at the start it seems like many people approach the edit as though DT is a replacement for this knowledge gap and there is a magic combination of sliders that works or will produce the correct path to the end result.
At the same time it might be great to edit with your eyes but if you don’t understand how to give your eyes what they desire then having a bunch of sliders wont help even when you might roughly know what the slider does in the module
So I think both aspects ie the technical knowledge and having a keen eye and visualizing are important, I just think that the missing link in processing between start to finish is often color theory and basic image editing concepts rather than mastering DT…if that makes sense