It's because their inner scientists ruled their thinking before they got the memo to spread panic. They knew then and they know now that the virus particles are so small they pass right through the masks. It's pure theater.
It’s all about control. I read that Columbia, SC just decided to make it compulsory to wear a mask in public. Charleston is considering it too.
The heck with that.
This is while the virus is declining (just as predicted) - but now they’re trying to stir up hysteria about a “second wave,” since the panic and thus the control were wearing off. Fauci must have realized that his influence is on the wane and he needed to rev it up again with a little panic.