You’re distracting yourself.
The point is if it treats even only 75% of cases, it should be used.
As I posted when it was initially proposed, if it only prevents those who are asymptomatic from becoming mild and that’s all it’s not going to change mortality. It is entirely possible it “works” but still doesn’t do what we need it to do. We don’t know that. We have a bunch of anecdotes, even some from clinicians with large numbers. It is entirely possible their observations are correct but if it doesn’t change outcomes for the seriously ill there is no reason to expose people to the risk.