Oracy is much more that just speaking fluently. It is confidence in front of people (be they large groups or small). It is eloquently articulating points of view without resorting to vulgar language or insults. It is the skill of bring people together. It is an art that can be a vehicle of cultural change.
No doubt Trump's own zealotry and self-idolatry would shelter his ego from harm, for even a seven-year-old primary school student would cringe at the redundancy and inaneness of his attempt at a logical thought process in pursuit of his own brand of Twitteroracy.