I think this is just his usual bluster and deliberately riling people up. That said, I do have growing concerns that he's too old to keep performing as President. I think it'll be less a case of dementia and more that he just runs out of energy, which you can already see during his public appearances of late. He's an old man at the end of his life and he just doesn't have as much fight left in him.

The United States Government needs to stop being an old people home.