The ethical consideration was probably to get rid of Covid-19 entirely. There is a lot of suffering now, but think of the suffering of unborn people in the future. The problem is that we didn't know it wasn't possible to get rid of it, and we still don't. I'm still hoping that we can find a way, but I agree with Bhattacharya that our arsenal is currently missing the capability to get rid of Covid-19 entirely.