I have no idea about what "individual protection" studies he's referring to, but he does sound like he's trying to say what I've been saying for a long time (better late than never): if you're high risk, you might want to increase your protection. That might mean using N95s (which the CDC now recommends) instead of earloop-type masks, but it's not clear what he's talking about. Anyway, Fauci's muddled monologue on masks shouldn't surprise anyone.
Cochran is irrelevant. It didn't take into account the best evidence for and against masks which is that masks were worn by everyone during 2020/2021 and 2021/2022 flu season and colds and flus disappeared, while covid didn't. The obvious conclusion is that masks seem to work for less contagious respiratory infections, but after a certain infectiousness threshold is reached (by newer covid strains, for instance), they don't.
The theory that masks prevented the cold and flu when COVID was around or that COVID out-competed the other viruses has zero research behind it, as far as I have searched.
SARS-CoV2 is a coronavirus. Just like all other coronaviruses which cause some of the respiratory illnesses that occur every year. I am unaware of any research that shows masks selectively block all other viruses (coronaviruses, rhinoviruses, RSV, influenza viruses, etc...) and only allow 1 virus to spread. It makes no sense.
Coronaviruses are in the exact same size range as influenza A. Why would masks block every other virus of every size EXCEPT SARS-CoV2?
In the entire history of respiratory illness research, I am unaware of any "cold season" when only one virus spread and no others did. Research shows the opposite - that multiple viruses/strains spread every year. One flu may be "dominant" but all other viruses still circulate.
I saw it with my own eyes. During the COVID panic, people were urged to go to a testing center if they had a respiratory illness. In my area alone, thousands of people with symptoms went to testing centers, tested negative, and went home. They all had some sort-of respiratory illness - thousands in my area - yet the CDC maintains there were hardly any flu cases in the entire US.