I can understand that impression from watching him as an actor, and watching him as himself doing guest appearances, or talk shows, or stuff like Critical Role. He has a vibe that he’s trying too hard sometimes. Where other people are (or seem) relaxed and naturally charming, it seems like it’s an effort for him.
On the other hand, I’ve read some of the books he has written, and I get a very different vibe from that. He’s a really good writer who is really honest about his life so far He doesn’t seem at all snooty or stuck-up in his writing. He seems humble and someone who has had some really great breaks in life, but also had to deal with some pretty awful shit. He also has a great sense of humour in his writing.
It’s entirely possible you (or I) wouldn’t get along with him in person. But, maybe that trying-too-hard thing wears off after he gets to know someone better. But, from reading his books I think he’s a good guy and I hope he has success in his life.