"The curve" is mostly driven by people who don't know they're infected passing the virus on. People who are deliberately infected and immediately isolated will be much less likely to infect others.

Not to mention, there are many places where healthcare systems are not at capacity, so assuming this approach doesn't change the total long-term number of infected people, it actually flattens the curve to the left. And if they're better-than-average risk candidates, it'll also reduce total medical system use.

In macaques they found reinfection was not possible.

https://www.biorxiv.org/content/10.1101/2020.03.13.990226v1

The news stories about reinfection are suspect because there's a high false positive and false negative rate to the tests.

It's the latest spin on the "herd immunity" meme.