I personally will believe in the use of masks. I look at a place like Japan that has a culture of using masks. This virus should be causing havoc over there, worse tham NYC and yet, it hasnt. If those people sneeze wrong, they put themselves in a mask.
Sure they can fudge numbers and under test to hide how bad it is, but you cant hide it long as we saw in China. Japan is also a country with a ton of old people as well