WHO, CDC, everyone has been wrong. In the case of the WHO, likely corruption was involved.
Fauci's predictions were based on models, models are based on data, data is based on testing which was also flawed.
It was politics that made Fauci, Cuomo and others into heroes. I don't fault Trump or any of the governors on either side either. I think they all did what they thought was right in the context of "two invisible threats" and there are no easy decisions in the midst of a pandemic especially without good data.
What's most important is that we learn what is the best strategy for dealing with future viruses. Correct the failures of data collection and modeling. Determine best policies on travel restrictions, lockdowns, etc. And this needs to take all factors into consideration including economic.