Projection.
Cover for Biden.
Could be just that, as they'll need to remove him if he somehow takes office.
It could also be the prep to declare Trump incapacitated when the ballot cheating gets them the win they want, but Trump has the proof they cheated - while the MSM won't publish the facts and says the proof is a "conspiracy theory".
They'll declare Trump detached from reality, because the MSM says so.
It would be just like Russia Russia Russia - it's true because the MSM says it's true.