I think you mean to say, Yelp users are sharing information, and patrons are choosing to go to different establishments that cater better to their desires. That was the idea of Yelp, was it not? Not seeing the problem.
On the other hand, I am opposed to nosy ass businesses and would definitely appreciate knowing which establishments are gonna waste my time with that crap so I can avoid them.
While it works against the main COVID-19 variants, it might not work against some evolutionary accessible variant.
New variants require a non-immune host population for natural evolution to occur.
The more people with COVID-19, the more likely there will be some mutation that affects vaccinated people.
This is why the flu shot doesn't carry life-time immunity against influenza.
Therefore, even if I'm only using egotistical reasoning, my understanding of how vaccines work make me care that others also get vaccinated - it reduces my future chance of health problems.