IIRC Nox thinks he's kind of a charlatan, which maybe he is. He definitely doesn't advance knowledge like some of the more mathy types, but I still enjoy most of his articles. He's a decent writer and creates interesting content, but not groundbreaking content. I think Nox is of the opinion that he tries to insert himself in conversations with the types who post on Tango's blog, but that isn't really the nature of his contributions.
That's what fangraphs is now, for the most part. Interesting content, but not groundbreaking, and for the most part, not quality research.