Without offering my personal view on the matter: there are individuals who believe that social networks, such as Twitter, have a non-trivial impact on public li

Without offering my personal view on the matter: there are individuals who believe that social networks, such as Twitter, have a non-trivial impact on public life (e.g., through political influence). These individuals likely believe they are essentially engaged in political activism by putting effort into this. There are also people who think he has enough on his plate with Tesla and SpaceX, and that these are more valuable ways to contribute to society than putzing around with a social media site. They'll put effort into this as well.