I very much disagree. Pretty much any halfway decent artist (say, anyone able to at least caricature recognizable people) is able to produce this kind of imitative art, when/if they are aiming for this type of copying. I've seen nothing coming out of SD that I couldn't expect to find on DeviantArt, at least if I commissioned it specifically. Most human artists of course don't do this, since people usually don't like reproductions (apart from posters) or copying others' style. Note as well the huge problem SD has with consistent fine details (especially text, but also often hands and even faces).

Of course, I fully agree on the speed factor (and would add scale/cost) in which SD without a question is far beyond humanity, obviously. That is a meaningful difference that is very likely to affect markets like decorative prints and other low-value art.

Perhaps this basic disagreement (which is of course ultimately subjective, unless someone is going to do a blind taste test) explains the difference of opinions for the rest of the points.