Furthermore you are focusing on a tiny portion of available data instead of all that is available.
Given that New York State has 4,000+ deaths your "model" would indicate that 1MM residents have COVID-19? So if it rips through the remaining 19MM residents in the course of a few weeks the result will only be 80k deaths? And of course the healthcare system won't break down?
Also you said that the Diamond Princess only had a 20% infection rate but the Greg Mortimer is reporting a 60% infection rate. Seems like you've got a lot of facts wrong on the first pass, IDK.