Joe never said the game was bad per say, just disappointing. He's right about a lot of things in the review too.
However, I still find the game enjoyable for what it is. Just don't come in expecting a big time story/lore fest with exciting mission based content.
And as stupid as Bungie's statement about how "the game gets better after 20 hours" is, it does actually get better. The problem though is that the first 20 hours is supposed to make you like the game, NOT after. XD
Overall, I thought his review was fair despite the fact I find the game very enjoyable myself anyway.