This has to be the one of the stupidest things I've ever heard. Streaming a playthrough of an entire game online misses the whole point of a review. Nevermind spoiling the entire story and gameplay, no publisher on earth is going to let a reviewer with early access put the final boss battle in a review for instance. As someone else said, this is like saying the only way to review movies is to watch a stream of the reviewer reacting to the whole movie.