I find this to be particularly bad with Americans and Brits. I don't really use yelp much anymore, but when you're on holiday and look at tripadvisor reviews of restaurants, it always seems to be the Americans and Brits complaining the otherwise great restaurants are bad because they don't do some awful shit that no one in their right mind would ever expect a really good seafood restaurant on the coast in Spain to do (e.g.).

These days, reviews on all platforms are more useful as a way to avoid genuninely awful places. As someone else said, ignore the average rating, but check a few comments to see if there's a consistent negative theme.