There is a differencw between what he posted here and getting on Twitter during every crisis to say you're going to personally solve it with a submarine, guarantee a fix to the Flint water situation, etc. One is obviously seeking media attention and positive PR.
It isn't worth engaging with someone as soon as they mention submarine, ventilators, Flint, or the other various dumb talking points these people love. They're beyond help and don't care about reality, they just love calling the richest person on the planet an idiot.