Good for them! However
1) the result is uninteresting. Worse,
2) even if we accept that AI produced a (borderline) original idea, where does that leave humans? Doing the grunt work of writing up while the machine does (boring) science?
Two physicists asked AI to choose a problem on its own, solve it and write a paper that could be published in a prestigious journal. In two hours, AI produced a paper with a novel, significant result.