From January 19th, 2020 to October 5th, 2020, 100% user give 5-star rating. for Quick BGG Rating chrome extension.
I didn't think such an extension existed, but did a Google search, found a BGG forum thread, and then was linked to this extension. And I'm so glad it exists! It makes searching for game ratings so much easier, especially when I find short-lived deals on board games and only have several minutes to decide whether or not I want to place an order. Thank you!
So far so good! Just make sure you select "exact matches" in the options.