He never called the virus a hoax; he called the media reaction to it, blaming him in part for it, a hoax.
To some extent, and I have no idea whether this was intentional or not, nor do you, his downplaying it initially COULD have been for the purpose of not causing a panic or possible over-reaction. Unfortunately, the media did that instead, and that's what he referred to as a hoax. As far as the weeks that were wasted, yes, but again, that falls at the feet of the CDC, FDA, and NHS. I guess it is reasonable to say that he was responsible for his actions once he found out what was going on, but, as been the case many times in the past, what different could he have done? Previous Presidents haven't been able to do much of anything in light of CDC malfeasance either. As is the case with most government agencies, it is a bureaucratic nightmare and a prime reason we should NEVER entrust our health services to the Federal Government. I don't know if you are aware or not, but on (gasp) Fox News, I heard Thursday that we are woefully short of ventilators in this country, and NYC alone could suffer very soon because of that shortage. I HOPE that somebody in the administration is trying to get that mess worked out. It's easy for you, or anyone, to say that "what we did in the last few days should have been done weeks ago", but again it's just typical of the giant government bureaucracy, otherwise known as the Swamp.