That’s essentially the long term version of “flattening the curve.”
The thing is, Sweden’s path is, IMHO, unnecessarily risky, gambling with millions of lives against possible losses of hundreds of thousands when stricter social controls are buying time in other countries to develop both vaccines and treatments.
At the very least, some of the oldest methods of anti-virology- using the antibodies, plasma etc., of the survivors to kickstart the immune responses of the unaffected may deliver treatments...but that takes time.
We’re still in the earliest stages of fighting this monster, We don’t know how long acquired immunity lasts- if it exists. We don’t even know the full range effects of Covid-19 on the human body- besides the lungs, we know it affects the v
brain, the liver, the cardiovascular system- much less HOW, WHY, and for how long.
As the epidemiologist pointed out, there may be effects we might not be able to diagnose for decades, making this a nastier virus than we think it is, simply based on mortality rates and virulence.