Nope, not until just now but I didn't reach the same conclusions. There is a reviews section that specifically asks for reviews. The ones on the front page are a minute portion of the total reviews and seem based on most recent replies/comments.
If one hits the > arrow to right of reviews all the reviews are shown. The 4 and 5 star reviews are more than double the one and two star reviews. So obviously there are far more positive reviews than negative. Conclusion, front page not necessarily representative of total reviews/comments. And when reviews are specifically solicited, opinions may and very likely will vary. Otoh, if reviews aren't specifically solicited then that is not a consideration.
As an aside, I don't have a facebook account so it's not a main source of information for me.