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.
Do you believe that Zuckerberg would be allowed to use Facebook to push his presidential campaign? I feel like he would have to divest himself of the company entirely first. Then again, that's maybe too much of an expectation, given our current political situation.