I don't think so. The whole point is whether a lock down is required to defeat CV-19. NY went with a hard lock down. As of April 3, 14 days after that lock down went into effect, NY had 105,031 total cases. If the lock down was effective in stopping the spread, we should have seen cases start to diminish at that point. The curve didn't start to flatten until May 1 (315,222 cases). Meanwhile in Florida the reopening 45 days on has not seen an uptick in daily deaths.
I agree with your premise, the single stupidest thing we did as a nation was shut down colleges and send a low risk population with high transmission probability home to their families that were higher risk with lower transmission probability. IF CDC's sole function is to prevent/limit the spread of a pandemic, there have been some head scratching decisions come out of that office. Monday morning QB makes them look even worse.