I don’t disagree with the point being made above. The science changes and then the guidance changes. The problem is we are dealing with people. Thus, social science must also be part of the equation.
As we have seen, COVID-19 is a new virus and is highly unpredictable. We don’t know what the next twists and turns will be as it mutates. Therefore, before we just follow what the hard science is saying, we need to think about the longer implications of making proclamations about what people should or should not do in reaction to the virus.
People don’t handle change well. The CDC, in my estimation, backed off on the mask wearing too early, and now I see it coming back again, and there could be a naturally adverse reaction from people who feel like they are being jacked around by the medical pin heads.
For myself, I’ve continued wearing a mask indoors in public places because I’m more careful and I live in a more conservative county with freedom-loving people who reserve the right to die unnecessarily.