If a student said such things, they would be arrested for making a terrorist threat. Why should an adult get by with this?
Maybe the Secret Service is already on it. They might be busy for a few years.
It is open season on Donald Trump, anything goes, as long as it goes toward him. However, do not give the impostor that formerly occupied the White House so much as a dirty look, or the full force of the Government will fall on you.
That was why the individual in question was able to get away with it. If he had said the same thing about the former occupant the White House, he would never see the light of day.