What's the alternative? A set of government-defined standards for what can and cannot be posted by people that have something to say about a local business? Maybe a special, quasi-governmental review board can be set-up (at taxpayer expense), comprised of the politically proscribed balance of race, color, religion, ethnicity, orientation and gender/transgender status.
These people can meet, and review the reviews that are publicly posted by pissant peons of the corporate oligarchy, and those reviews can then be judged based on how well they reflect the transcriteria's definition of "constructive, non-hateful and consensus-focused speech", as prescribed by The Federal Standards of Speech Acceptability Act of 2015, as enforced and interpreted by the Department of Homoland Security.
Given the disruptive and anti-social nature of so many of our ungrateful citizens, this Review Board will also require Special Enforcement Powers as authorized by Chapter 117, subsection 48, paragraph B of the Newly Revised Patriot Act, as well as a Special Municipal Tax to be levied as a component of the State-Mandated Social Progress Consolidated Fees and Administrative Management Initiative of 2014, said power shall include, but shall not be limited to the establishment of a special class of "hate speech criminals" and depending on the number and severity of offenses, punishment and re-education sentencing can range anywhere from monetary fines to several years in prison.
Either that, or we could simply do away with Yelp. Everyone knows they are a terrorist, hate-group front organization for numerous illegitimate entities whose identities cannot be mentioned here due to the sensitive nature of several ongoing investigations.
Personally, I endorse the idea of extortion, and as it happens I am currently getting ready to do exactly that to a local business. I LOVE the idea that I can post all manner of incendiary statements about a particular business as a means of coercing from them the money that they owe me, as well as a good-sized dollop of punitive damages. And THEN they can pay me even more money to remove all those incendiary statements, and my Reputation Management Services do not come cheap. And, at the end of that process, maybe they will get the basic message that every once in a while, you run into a guy that makes you realize that there are some people that you really shouldn't fuck with. I intend to take a $300 debt and make it cost this business something on the order of $30,000, and I'm going to inform them of this goal both during and after their journey.