From a user of both services, and not a lawyer - Yelp has burned all benefit of the doubt by seemingly basing their business on deception. I find using Yelp to be extremely difficult as I end up frequently reading an advertisement instead of a review despite double-checking first (!), I find myself locked out of Yelp content frequently (I have an account! Maybe I'm not signed in? Who knows? Or am I trying to use the website and not their app? etc).
Yelp frequently leads users to believe they have information right in front of them when the user has no such thing. Given that this is the current state of affairs, and has been for years (always?) I would think Yelp would have exactly 0 credibility when it comes to them trying to make things "fair" in search results.
Why should a society bend for Yelp when Yelp has done everything in their power to deceive us through poor UI, poor UX, misleading links, what I would even call false advertising? We shouldn't.
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Edit: As a point of comparison, on Google you know when you're reading a review and when you're seeing an ad right away, there's no confusion or deception or lies there.