You don't need charisma when you can insert yourself into people's notifications, Facebook and Instagram feeds, have a near-live overview of the majority of the voting population, know their political bias, cultural heritage, and much, much more.
And once in office, the emoluments clause of the constitution has been shown to be pretty toothless.
Entirely toothless.
[1] https://www.investopedia.com/articles/insights/082216/top-9-...