"He sounds like us and we appreciate that" sez a Trump supporter. Does he talk like that just for them or does he always talk like that?

He could be "dumbing down" you know. He brags about graduating from Wharton  and I wonder if he had spoken in class as he does on the campaign trail or as prez what would his peers/Professors have thought of him? I wonder how he talks to world leaders and the movers and shakers? Does he employ a different mode of speech when he is with them? If so isn't that really insulting? That he thinks so little of his supporters that he "accommodates" to what he thinks they are? Did he speak that way at home to his parents? Is that how he speaks to his employees or the people with whom he wants to engage in business?  I dunno. I'm just asking.