@boldmonkey You're not wrong that the ratings are excessively flooded by people handing out 9s and 10s like there's no other numbers available, but there are plenty of things that have managed to at least be bad enough to drop below a 6 or 7 average as well... because people sometimes also act like 0 and 1 are the only numbers they know, mostly.
I kind of hate user generated rating systems for various reasons, but the biggest one seems to be the users. That said I haven't read this at all yet so this isn't a commentary on how accurate this one's rating in particular is.