"You better listen to me, I am wearing a white coat with my name on it"
Really though, it's good that we have another prophylactic candidate after hydroxychloroquine failed so bad. It's weird that it's being touted so hard by weird/fringe right wingers though (the type of people who are prone to Appeal of Authority figures wearing white coats with their name on it) (and oh they also pushed hydroxycloroquine hard for some reason as well)...
Just keep studying it (which they're doing). If it works and it's safe, we'll absolutely use it.