How does "himself" function here? Doesn't it still make perfect sense even if "himself" is omitted?

Native speaker’s answer
Rebecca
You're right. The sentence would make sense without "himself!" However, the addition of "himself" adds emphasis that he's personally apologizing to Nic Cage, and it's not just a public or general apology. It also makes sense since he's a very famous figure. The "himself" may not be added if it's just an ordinary person. It emphasizes Nicolas Cage's status as a public figure. Ex: I'd like to apologize to Johnny Depp himself. He was actually a great actor in Pirates of the Caribbean. Ex: I want to apologize to Tim. I'm sorry I embarrassed you.