Can you provide some evidence for your first sentence?

As far as I can see, this article is about a prediction made by theorists about the evolution of certain quantum devices when you frequently measure part of it. This was a nice theoretical idea which has now been tested experimentally.

The article itself does not seem to contain any claim of quantum supremacy, even for this specific subject. Also, while I think the research is really cute, I do not see it being 'actually useful' in any sense - and the article also does not seem to make such a claim.