How do you come up with those questions in response to this information?
If "science" demanded 6 feet of separation to limit transmission, then that guidance should apply until the virus is eradicated.
This was never about science, it was about a social and political risk assessment made by government entities and imposed upon us.
I accept that a risk assessment can change with time, but I will forever resent the notion that restrictions were imposed based on "science." Science and risk assessments are very different things, with different inputs and different implications.