I question that statistic anyway. Are those deaths that truly would have been prevented or just delayed? The point being that until and unless a vaccine is developed or herd immunity is achieved, COVID-19 will continue to spread. The point of "social distancing" was to keep hospitals from being overwhelmed by too many cases at once and to prevent deaths due to that reason. COVID-19 can't be stopped this way, only slowed. As far as I am aware, no deaths have been caused by hospitals being overwhelmed in the U.S. Hence, no deaths could have been prevented by doing anything earlier though perhaps some could have been delayed.

I suppose you could argue that some of the lives lost might have managed to avoid contracting COVID-19 altogether because herd immunity (which requires a significant number of people to contract the disease) will be achieved or a vaccine developed first but that seems pretty hypothetical to me at this point.

Trying to determine what could have been done differently does have value in terms of lessons learned for the next time around. However, I remain doubtful that the correct lessons will be learned.