I've got 244 DVDs in my queue and I've rated 1496 so far. I don't seem to have any of the problems that the author seems to have.
Their recommendation system is far better than I've seen in any field and it is incredibly accurate in my experience. The UI hasn't updated much, but it has updated. It really doesn't need to. You find movies via the recommendations made on _every single page_ or you find movies by following a particular director or actor to their page. It is a very easy site to navigate and use. I have no idea why the author seems to have such a hard time with it.