The new COVID guidelines aren't quite as described.
I've had to enforce the CDC guidelines in my classroom since the fall - so I am intimately familiar with what they were before.
The post-exposure recommendations for fully vaccinated individuals have changed in detail, but not substance.
Before the new recommendations - if you were fully vaccinated you don't have to stay home after you have been exposed. It was recommended you test at 5 days, but unless you test positive or start experiencing symptoms - as long as you wear a mask quarantine was not recommended before the changes and is not recommended now.
What has changed is the pool of people who are considered fully vaccinated (it has shrunk).
To be treated as fully vaccinated NOW you must fall into one of these three categories:
1. You have had any booster
2. Your mRNA series was completed less than 6 months ago
3. Your J&J vaccination was completed less than 2 months ago.
So MORE people are considered unvaccinated (and subject to quarantine) under the new guidelines. (But the quarantine has been shortened)
Here's a handy-dandy flow chart (stamped Ohio, but it was created using the new CDC guidelines).
The shift from 10 days to 5 days, without mandatory testing stinks - BUT - that shift is also tied to the new definition of fully vaccinated. More people (with stale vaccinations or only J&J) will be required to stay home after exposure.
= new reply since forum marked as read
-- for myself -- because they're formulated for over 300M people in friendly and hostile territories and god knows how many private and government institutions, with many different realities. Not for me.
Unlike the CDC, as an individual, I don't have to limit my choices to what won't cause crooked governors and angry parents to flat refuse to have anything to do with them. Or to what won't be knocked down by politically motivated judges. There were always many highly qualified people (preferably not a talking-head careerist) competently explaining what INDIVIDUALS need to do as this continued.
Our son's work's like yours, but takes him into hospitals and SNFs; he's always compliant at peak with the industries, no matter how they word it, but if a business decides on a special requirement, he meets it and likely adds any cost to his bill.
Btw, I should be open that problems at the CDC have never kept me from being an admirer overall. Things were really bad with tRump's corrupt director ignoring its scientists to obey him. (Nurses were wearing garbage bags in Covid wards, for god's sake, while the tRump admin was already refusing and eventually literally blocking getting the DME they needed.) Not to say there aren't occasional failures. Or that in the best of conditions there wouldn't have been difficultly choosing the best of the possible courses or that hindsight wouldn't reliably provide better information on which had higher likelihoods of working better.
In any case, regarding guidance, I watched the CDC appalled, bled for its horrified and embattled professionals, and took the advice of the many non-CDC world-class independent experts who agreed on what individuals needed to do: be responsible, mask well, keep hands clean and away from face, maintain social distancing, stay out of enclosed public spaces amap, and don't buy up the nation's N95s. And a few other things for people who wanted to be extra careful.
Isn't the best course for individuals pretty much the same now? Except to stay fully vaccinated and buy medical-quality masks? To me vaccine decisions are simple: when the FDA approves one for me I get whatever version is being given in my area. I'm very high risk due to autoimmune and other health problems, but unlike you we do have the stifling luxury of isolating.
As for the rest, including business requirements, err toward conscientiousness? After all, good mothers and schools teach kids to always scrub their hands and keep them away from their faces, not to check CDC guidelines to see what current recommendations are.
An answer would be an authoritarian government people refuse to obey at their own predicable peril. Unless it was one headed by the sort of depraved, corrupt authoritarians the right's electing these days.
We're all dragged down by the corruption of RW attitudes and the fecklessness of 100,000 who didn't bother to vote in 2016. Wish it were still unbelievable. This pandemic could have been mostly contained and stopped in all or almost all areas of the country within a few weeks to months, even without antibiotics. 800,000 victims ago.
I feel a little like decent Germans must have who had to live through their period of insanity. Without the carpet bombing and scrabbling through garbage to fend of starvation of course.
Geez, sounds like I should go get something to eat, take a vitamin.
...the next, because they failed to boost, they have become a filthy MAGAT. 
We literally have people walking around with two shots worth of "protection" that has expired like a rusted fire extinguisher. Guess what fools, the same way you have to buy a new fire extinguisher from time to time you have to GET BOOSTED!
It's up to all of us to confront the so-called "vaccinated" in our communities and demand proof of booster shots.
Un-boosted is un-vaccinated.
Unvaccinated is anti-vaccination.
Anti-vaccination is anti-science.
You don't want to know what comes after anti-science but trust me you don't want to be it. 
Get fucking boosted. 
