There is not a single vaccine in existence that prevents all infection. The polio vaccine is probably the gold standard—around 99% efficacy. Measles is also great--96%.
I don’t expect everyone to be an expert. But if you aren’t one, trust the actual experts. If I need legal advice, I hire an attorney. I don’t ask friends on Facebook or my Disney bus driver, regardless of what he claims is previous career was.
Also, Fauci is an excellent scientist who sometimes exaggerates the truth on CNN to be more persuasive. I can’t blame him. Our booster uptake is pitiful. Sometimes I tell my kids little white lies to get them to do something that is in their best interest. If a person is as educated as Fauci, I grant them some latitude to be patronizing. After all, people demand to be told the science and then complain that a scientist is talking down to them. It’s almost as though science is complicated and difficult to understand.