Chicago has a huge Yelp user population, and stars aside, the reviews of restaurants are themselves ill-informed and misleading. You have a much more compelling case with the bodega and the Michelin-starred restaurant, but, for example, a prominent and well-rated review of The Publican claimed they had food-service fries, which was funny because I read it while watching Paul Kahan peeling potatoes by hand before they fried them in duck fat.
I don't trust anything I read in Yelp. Google should buy LTHForum.