Personally I think they pick stuff based on what they need to keep the wheels turning. If you quarantined everyone who will come down with omicron in healthcare for two weeks, there’d be nobody to take care of patients. You saw the shortened isolation period after they realized how contagious it was. Also, the guidance for healthcare personnel says if your institution is in “crisis”, you come to work, Covid or not, symptomatic or not, contagious or not. They really should just say don’t ask don’t tell, which is what many are doing anyway. Don’t test, say you have a cold, work anyhow.
There is literally no governing body I believe anymore. I just make decisions based on what I can see with my own two eyes.