He doesn't need the money but I think you are right that he will substitute it from other sources under his control. It's clever messaging to designate a different monthly charity recipient because he gets to remind the whole country of his selfless act every four weeks, 48 times.Here’s what I hope: He’s genuine.
Here’s what I think:
He will extract 3x (++)that salary amount from other sources he has access to as President. These so called altruistic acts are becoming laughable.
Actually I’ve seen too much to be anything but cynical.