It sounds like Sweden thinking is it has enough excess health-care capacity to handle the number of infected.
Considering that Sweden is wealthy, and a heavily socialist country, may be correct.
If so it would be in stark contrast to the US system, which for decades has been pressed to reduce capacity. Ironically this is to reduce costs, but as everyone knows, US health care is the most expensive in the world by far.
I've heard it speculated that either most will eventually catch the virus or be vaccinated (when that comes out).
Assuming all this is correct
Pros: Sweden due to its decades of creating capacity, with its additional expense, will have an economy in much better shape.
Cons: A higher percentage of Swedes will die when compared to Kiwis, because a vaccine doesn't yet exist.
It comes down to Sweden throwing the infirm and old on the bonfire to keep the economy warm for the youth.
Sweden has chosen "we'll put a little effort in controlling the fire, but let nature run its course; we'll save who we can." In a decade, we'll see how that compares to "fight the fire no matter the cost; save as many as possible".