As I recall, Gates is a school dropout. Where does his biology, immunology expertise come from. What we are getting from him is nothing but his political opinion, not science. Hell, even Fauci who is supposedly an expert in the field has been constantly contradicting himself. So, I sure as hell am not going to listen to someone like Bill Gates on the subject.
Bill Gates proves that you can buy yourself a doctorate in anything when you have enough money. The more money you have the less people will question your authority.