The environment changed though. There used to be a large benefit by testing asymptomatic people. With omicron, that benefit has been greatly diminished. It's not that the guidance was bad a month ago. It was working ok.
What we didn't anticipate was that "known contacts" became pretty much everyone in the country right before Christmas and everyone wanted a test. There was a huge influx of people testing and we weren't ready for it. We should have been more prepared for that, but we weren't.
and this isn't now just about what is the "right" thing we can do today. I agree we should not be testing asymptomatic people now, but I also understand why they wouldn't flip that switch quickly.
There are consequences of that because people want consistency and if we tell people testing isn't as important today... it won't be as easy as telling them that testing is important tomorrow if that's what the environment dictates.