It’s naive to assume he “clearly” writes his own tweets. There is not enough time in the universe to do that and everything else he has to do as a presidential candidate. Good writers can be hired to assume a certain “voice.” And multiple staff “checkers” can check that voice as minutely accurate as Disney artists make sure that every detail of every line of every “mouse” image is absolutely correctly drawn on every piece of Disney swag. All it takes is money and a clear policy and style guide.