While I agree it is not “presidential”, perhaps the way Trump speaks and his choice of words is a way to show that “politically correctness” is on its way out.
Truth be known, would you be shocked if you heard Hitlary talk off camera, not to mention previous presidents, senators and congress critters, why the triad against Trump?
We know who is associated with the word, “expletive deleted.” It was President Nixon and it referred to the edited White House Watergate Tapes.