We have to find a way to get to a new normal, where we can go about our daily lives with some reasonable level of safety measures. It’s simply not sustainable to maintain a shut down long term.
This doesn't sound, to me, like a very ethical experiment given that the cost of waiting it out for another two-ish months is comparatively easily calculated and not terribly "doomsday" in scope. Whereas a return to the days of late March where the death count was doubling twice a week very much... is.
Now... in practice? The "lockdown" won't really be released like that in these states, because people aren't going to be willing to travel or dine even if it's "legal". So these states will probably see a moderately worst outbreak and see moderately better results, and we'll all get to continue these arguments forever.
Probably. Or it could be a total disaster. I wouldn't bet on that result, exactly, but I wouldn't be shocked if it happened either.
For evidence: consider pork production. That is an "essential" industry. It's never been "locked down". Yet per the news today I see that 25% of the industry is effectively shut down by viral outbreaks anyway. That's what we should expect if we insist people go to work -- unexpected, uncontrolled outbreaks in locations and businesses and industries. We're not going to get to anything resembling a normal economy.