The important thing to remember about AVGN is that above all, it's a comedy show.
That said, some of James's ranting recently has struck me as very forced. I mean, I know it's a character and all, but I could feel more genuine frustration from him before. In the Tiger handhelds episode, I don't think he actually cared all that much, but he probably felt it wouldn't be an AVGN episode if he didn't scream for a while.
Hopefully, the movie has a healthy mix of James the actor and James the gamer. As for the show, I personally think he could easily get away with going more low key at times.