The reason why AVGN isn't what he used to be (in my opinion)
It's forced. He's no longer having fun doing it. Or at least not as much.
Compare his latest reviews & even the movie to his first reviews like Castlevania 2 or Dr.Jekyl & Mr.Hyde.
In the first reviews, he was genuinely expressing his opinion about the game and its flaws (the actual frustration was real), while now he says what his fans expect him to say.
If he goes back to the original formula and just starts saying what he actually feels like saying, I think it will make for a much better episode.