Yes......and in a moere "normal" situation....... that fact would be addressed. Any leader of any company that would demonstrate this kind of behaviour would have been refereed to Mental health services and given a leave of absence........ ASAP. Or asked to resign with recommendations for getting help.
The issue is no longer that he is unstable.(THAT is obvious).........the issue is that his behaviour is being rationalised, justified and "defended"........and that is a problem.
... supported by a third of the population of the most powerful country on Earth (for now). Scary is the word.