Is James (the author of the Epistle of James) in the category of apostles?

I've heard arguments by people like Richard Carrier that the author of the Epistle of James is *outside* the category of apostles, meaning that this James is *not* an apostle. And that the James in the Book of Acts and in the Epistle to the Galatians was not James the Just but James son of Zebedee. Can you respond to Richard Carrier's argument, which can be seen in [this video](https://m.youtube.com/watch?v=DodGgjkMsZw) ? The reason why I asked you this is because I'm a Christian struggling with my faith and I wanted to ask my brothers in Christ to help me.