It sounds like your plan to deal with an exponential outbreak is to wait a few weeks until you have better testing to see if this is really something to worry about, or if those disaster countries that came before you were just a fluke.
Do you not see the problem here? No one is suggesting we don’t test. But the disease is rapidly spreading while we dither about, and if you’re wrong about the CFR, it’ll be way, way too late by the time we know that.