Where are you hearing this? Because I hear the opposite and THAT'S the disappointing part.
Yes, there was life on every planet. Every single one. But, keep in mind, the life itself VARIED dramatically - when I found life on the "Fauna: None" planets, it was seriously stupid shit like prairie dogs. I wasn't encountering giant rhinos or anything. I THINK, although I could be wrong, but I THINK Sean's "90% of planets are bone dry" comment was in reference to planets LOADED with life. Or they just changed their mind last second - who knows.