Putting cynicism aside (there's plenty of that here already): there is a theory that people invest in index funds because they don't want to pick individual stocks. They want exposure to "the public stock market as a whole". I think there are good arguments on both sides of including SpaceX in such an index.

Getting a very popular stock on their exchange. Directly making money from it.

The president may throw a tantrum that “some crazy democrat throws stones under the feet of that beautiful Elon, the most beautiful Elon we ever had”. Better do what the new Tzar wants. Dude was sent here apparently by the God, don’t mess with the God.

I mean we know why