I heard that Yelp lets you pay to have bad reviews sorted towards the bottom. I recently listened to a podcast episode [0], where the CEO claimed that is not true. Would be interested in evidence on either side.
Rossman exploded on Reddit with an Apple device repair rant several years ago, and then leaned super hard into that to keep his views up.
Much like Glassdoor, I find it hard to trust him since it’s clear he has a moneymaker. He’s incentivized to accuse the Big Corps of wrongdoing and he never has to back it up.
He owns a apple repair shop and complains about apple all the time. He just happened to go viral on reddit once (actually a few times). He makes most of his money from his repair business, his sitting-in-a-chair videos (that aren't about apple), and his bike videos are just him talking. I don't really agree with a lot of what he says (esp. about NYC) but I don't think he's being biased in this video.
This issue is complicated by the fact that there's a thriving ecosystem of marketers and scammers who operate around Yelp, and will call and tell you they work for Yelp and can have negative reviews removed and other things. So people really are getting these calls, it's just that it's a scam.
I think you missed that it's third parties offering to perform these services. They target Yelp because it's one of the more prominent review sites, but I've gotten calls from people claiming to be able to manipulate Google reviews as well.
[0] - https://www.npr.org/2020/09/30/918845338/how-i-built-resilie...