I have said at various times since President Trump was elected, and this does somewhat underline the point I made -
Twitter is not a dignified and appropriate way for the President Of The United States to convey his thoughts to the world.
For exactly the same reasons it is occasionally unsuitable for anyone - Twitter gives an opportunity for instant emotional ill-considered thoughts and views to be posted late at night from over-refreshed individuals who would probably reconsider in the cold light of day.
If you are Samantha from Essex, no harm done, if you are the leader of the free world, then an element of thought, common-sense, and acceptance of consequences are required - something President Trump consistently fails to understand.