The rules they put up likely reflect what was in place when they wrote those messages. I suspect when York happens that about the only thing they might recommend is those who haven't been vaccinated wear a mask , that is what is typical around here now that they lifted all the restrictions. Yes things could change, if a new variant shows up that makes vaccines ineffective, which is always a possibility, all we can do is hope the current trend continues.
When my car needs fixing I heed the advice of mechanics, when I have a water leak it's a plumber I call, taxes - an accountant, you get the drift. Therefore, when it comes to science and medical topics it's scientists and medical doctors who have my ear. Any so called advice coming from unqualified individuals goes in one ear and out the other. Your mileage may vary.