He'll never explain because he'll never HAVE to explain.  People like him get away with damned near anything, live to see another day (as has Hagzilla Clinton), and then start on new scare tactic project.  IT'S WHAT PEOPLE LIKE HIM DO.  It's all they do, and earn millions and millions and millions of dollars, which is why they never give up the ship even when it's sinking.

https://www.takimag.com/article/the-fauci-who-cried-wolf/

QUOTE FROM THE ARTICLE:

"If some of these quotes sound familiar, I cited a few of them in that March 2020 column, at a time when “public health authorities,” cable news hosts and the president were demanding nationwide lockdowns.

Today, Fauci is doing the exact same thing with COVID, treating teenagers as if they face as much danger as people in their 70s, despite the latter having a 300 times greater chance of dying from COVID than those under 20. For young people who contract COVID, the chances of dying are less than the risk of dying from sunstroke over the course of their entire lives. Even for those in their 30s, the odds are about the same as their lifetime risk of dying by choking on food.

If he’s ever interviewed by a serious journalist, perhaps Fauci could explain why his idea of “science” is about avoiding stigmatizing certain groups, and not about saving lives."