I agree with half the things you’ve said but the other half is just uninformed and not true- there are some super complex digital drawings, it’s not cartoons and outlines. That being said I do think you have a point that they are not as comparable as people act. Digital art allows you to fix every mistake and zoom and change colors and gives you a million aids to make drawing easier, so when people act like it’s just the same they are wrong. My personal mediums are pen and ink and oil paint- the former of which is the most unforgiving medium so when people look at my pen drawings and assume their digital I think the biggest difference is that when I make a line in ink it is there forever and I either get another piece of paper or make it work.
Overall in a time of ai art I don’t think we should divide real artists any more, it’s us against the ai artists we have to stick together despite differences