I think,if anything, that this new data validates the lockdown. New York City has been hit hard by this virus (0.2% of the population; for comparison 0.3% of the US population died in WW2) and there are still approximately 80% of the population that hasn't gotten it yet. If 70% of the population of NYC ends up getting it over the next few months, that would mean something like 50k to 60k dead just in NYC. If 70% of the US population ends up getting it that would be 1-2 million dead. Locking down in the face of those numbers is not an overreaction, although maintaining lockdown until a vaccine may be an overreaction. I think we should be devoting huge amounts of resources to manufacturing face masks and testing kits so that we can safely ease out of lockdown without causing more outbreaks like we saw in New York or Italy. Ending the lockdown without a plan, though, is highly unethical in my opinion