It was getting close to time to alter the guidance, but once again they did an awful job of communicating it. I just don’t think many vaccine hesitant folks are racing out now to get vaccinated because the CDC say they are allowed to take the mask off afterwards.
Public health messaging is tough in this environment, there are so many people out there actively trying to discredit whatever they say. So much of our planning for this was based on assumptions that people are ultimately rational and willing to make some effort to stay safe and keep others safe. We were so wrong about that. As evidenced by several poasters here.