Strange COVIDiocy: the "Fauci lied" narrative

Recently ran into an antivaxxers who asserted repeatedly that Dr. Fauci lied and is a criminal and variations thereof, among his various antivax viewpoints. 

So I asked him what exactly did Fauci lied about. 

He gave only one answer: early in the pandemic, Fauci asked people not to mask up. He later changed his stance on that. According to this anti-vaxxer, this constitutes lying, and since he's a public official, this constitutes deceiving the public and should be arrested and charged with... something. 

Let's get a little context on this. 

Back on March 8 2020, Fauci did say "there's no reason to be walking around with a mask". This was only a few months after the discovery of COVID and nobody has any idea how bad the pandemic would spread. At that point, even WHO believed COVID to NOT be airborne. No one knew how bad the asymptomatic spread would be, and there was a genuine fear that health facilities may run out of masks due to panic buying by the public. 

CDC changed its stance on masks on April 3, 2020, recommending people mask up in public settings, esp. when social distancing will be difficult, and they recommended cloth masks, not the genuine 3M medical masks that people sought. Even since, Fauci have repeatedly stated in public that people should mask up, and even wore a mask to a July 2020 Senate hearing. 

Not to mention asymptomatic spread is a serious problem, much more serious than we ever suspected. It's believed that 30-40% of COVID spread is from asymptomatic people, and the way to stop spread is to ask everyone to wear a mask since one does not know if one has any symptoms. 

So I pointed out to the antivaxxers that he's being unreasonable. He expects government officials to NEVER admit their mistake if they made one. Isn't that even MORE dangerous than lying? Basically double-down and make the problem worse? 

"All men make mistakes, but only wise men learn from their mistakes." -- Winston Churchill

He's not backing down though, kept calling Fauci an incompetent fool and a lying SOB, as we as being old and senile. 

Guess he won't be learning from his own mistakes any time soon.