That's not ignorance, it's malice. Elon has made it clear that he'd like nothing better than to require everyone to show their official ID for "age verification" purposes before being allowed to use social media. I'm not sure exactly why. Easier to file lawsuits against anyone who uses it to make fun of him, or perhaps it's just one small step in some kind of grand totalitarian vision of the future. But he can't hope to get away with imposing it on Twitter unless competitors are required to do the same.