I don't think that necessarily follows. Someone who still thinks we should remain masked for a while longer might believe that we should continue to err on the side of caution, because we've seen infection spikes when restrictions are eased or lifted too quickly. The CDC's initial mask recommendation came later than it should have, so why is it so hard to believe that lifting that recommendation is coming too early?

Remember that, while the CDC is advised and informed by scientists, they are ultimately a public policy agency. The science matters, to be sure, but what matters most is that the best outcome is achieved, based on people's behavior.

I think they're recommending dropping mask requirements now not because it's the best science, but because vaccine demand has been dropping, and they believe that giving people real-world, day-to-day incentives to vaccinate will convince some of the people hesitant to get vaccinated. And I agree with them on that, and I think it's the right move, even if it carries some risk.