This. It's so far out there that I have to wonder if it's a rogue employee who thought this a good excuse to cause reputational damage without it being too obvious. Doesn't pass several razors though (not the simplest explanation; malice involved.. is that Hanlon's and Occam's razor?), so I don't truly believe it... but it would be possible

Since it's AI and Microsoft I can believe that someone who doesn't know what they're doing would be given a mandate to promote AI under any means necessary at the cost of some other team's reputation.

But it's an insane move. If anything AI has made it more important than ever to know who authored something and then someone does this to promote AI.