You can definitely argue that the user's direction and curation work was intellectually trivial (though there's meaningful room for disagreement even there, especially wrt. having the AI stick to established terminology/broad approaches - this is arguably a sort of successful "systematizing" work, though only in a very minimal sense) but this was not a one-shotted result. The blog post is extremely clear about that.

And of course, going by their own admission, they couldn't "have done this themselves": the most you can argue wrt. this is that Mantova and L'Innocente, or some other narrow domain experts, might have done this themselves and that AI "scooped" this result from them.