This isn't some crazy guy yelling on the street. It's not like this is some random anonymous person on Twitter, he used to be the CEO of Twitter, a large social media platform that is responsible for news (and misinformation) being disseminated in an instant.
Not only that he's worth like half a billion dollars. That's the main difference between he and some crazy guy yelling on the street; he has money to help support candidates that could push for his crazy ideas.