I certainly wouldn't profess to speak for Peter, but when people ask me, "Is it the camera or the photographer?" my answer is always, "Both". A Holga, a cell phone and a MF camera can all be used to make excellent images, but they'll be very different. At the same time, I remember walking into a camera store I used to visit back in 1982 just as a woman was walking out. The owner of the store told me she'd just dropped $700 on camera equipment because she was going off on vacation and 'wanted to take good pictures'. My reply was, "She is going to be SO disappointed." Maybe she wasn't, but I believe the point of Peter's article is that knowing how to use what you have and learning how to see as a photographer trumps unknown equipment of any price range.
Mike.