The left isn’t changing its mind on Fauci
Of course not.
A mind – even a collective hive mind – is a difficult thing to change. Cognitive dissonance is very uncomfortable; people usually will turn themselves into pretzels to justify the position they already hold.
What’s more, it’s easy to avoid the current coverage that condemns Fauci, and concentrate on coverage that continues to praise him. See this:
[The recent] Senate Homeland Security Committee hearing with Anthony Fauci revealed one thing: the Democrats and their media allies will stop at nothing to protect Anthony Fauci. Despite his lies, his corruption, and the indescribable harm Fauci inflicted on the American people during COVID—all proven with his diary—the Democrats and media still hail him as a hero.
Last night, watch how CNN’s Abby Phillip shut down conversations about the diary, which also made CNN’s Jake Tapper look really bad.
They’ve had an awful lot of practice in this sort of thing.

The leftists I follow are all about how Trump pleaded the 5th X number of times, therefore it’s fine Fauci did it. His crimes are ignored.
I have almost never seen a Democrat, leftist or a Muslim arguing in good faith on a hot button issue.
There are a few, but they tend to switch sides eventually.