This is a perfect example of the criminally underused word "sophomoric." Almost all teenagers and young male adults go through a phase of it. It's why second-year college students are "sophomores," because right at that age is where it usually hits is peak.
It means that you're smart enough to know that Elon Musk isn't the CEO of Twitter, which is significant. Congratulations! But you're also convinced that what you know is all a person would need to know, and other people being stupid is usually the explanation for things. You don't take time to read the article which is talking about Tesla and SpaceX, both of which he is the CEO of. Nope, you just see "Elon Musk" and "CEO" and you know that a lot of people aren't as well-informed as you, so you insert the word "Twitter" and spring to the races, convinced that you are right and this global media empire must just be full of idiots. You don't even need to read the article. After all, you're smarter than them.
Usually people grow out of it, eventually, as they contact the real world which contains other people who are also smart, and learn to think twice.
And how the unusual structures of Tesla and SpaceX lead to him being much more difficult to remove as CEO from those companies, as compared to more conventionally organized businesses.