Better practices and procedures in the nursing homes can reduce the deaths enormously, since about 40-50% of the deaths in the first wave were in the LTC facilities. Using the "math" from that time period and applying it to outbreaks today seems pretty suspect and exactly the kind of bad science that leads governors and mayors to enact unhelpful lockdowns that make people's lives even worse.
Honestly, from a public health standpoint, there is nothing to fear from a bunch of healthy young adults getting the virus and having the sniffles for a day or two. That's a natural part of getting over this as a species. You need that huge pool of people to survive and gain some immunity, which in turn protects everyone else. This is not even to say how you need these young people out there working so the vulnerable people (and those who are just scared of the virus...) can keep using DoorDash, Amazon, etc.