The yelp review paint a picture of 2010: Great food, great service 2011: Good to great food, horrible service 2012: Horrible food, horrible service I usually don't trust yelp, but the decline is way too visible here.
So, you are told of a credible example of a restaurant being sabotaged on one user-content-based website by opponents, and then turn to another user-content-based notorious for fake reviews & astroturfing, and see an abrupt & extraordinary decline on every axis, and rather than take this as additional evidence of the sabotage campaign, you take this as evidence that the restaurant was declining simultaneously with the sabotage campaign? Interesting reasoning there.