I tend to agree. I think he's supposed to be naive. Right from the beginning, when he thought he could just walk in to Rand without any ID. Or in the second episode, when the shrink is just starting to believe him, Danny tells him that he's the iron Fist and that he was in another dimension. It's as if he didn't know the art of deception. Someone mentioned that he still, in some ways, thinks like a 10 year old. I tend to think/hope that's intentional, and not just bad writing. I'm hoping that part of his character arc will be becoming wiser in the ways of the world. From a character development point of view, it would make sense why he needed to leave. He may be a fighting weapon, but to defeat the hand, he needs to be a WISER one as well. He needs to learn how the world, they operate in, works.