This is also misinformation. Fauci, et al, were going based on the current NIH guidance at the time, taken from the original SARS virus, which was that improper mask use was potentially more dangerous due to the risk of cross contamination. In this case there was actually strong evidence that a significant number of cases in healthcare settings were coming from contaminated PPE.

At the time, it was thought that it was primarily surface contact which spread the virus, or at least that this was a major source of spread. Now imagine that your average idiot with one improperly fitted mask was told to use masks. They would touch contamination surfaces, touch their mask, and then bring that mask into their car and their house, contaminating those surfaces as well. Given what we knew at the time, this was considered a very serious risk.

Once we understood that airborne spread was a bigger threat, they updated the science. If they are guilty of anything, it was failing to properly explain the nuance of the above reasoning, though in their defense, there was a giant orange idiot taking up most of the oxygen in the room.