We've talked on this thread about masks being a contentious topic. I think we can lay much of the blame at the feet of videos like this one. Numerous studies have shown that people tend to believe/remember the first thing they hear, and the first thing we heard from the health experts was to not wear a mask.
Ohioguy is right that opinions change, data can cause recommendations to change (or perhaps the original recommendations were made with an eye to preserving what was a scare resource at the time and the full rationalization was not made public). but a lot of people will only remember that first recommendation. Or, if they don't like the second one will use the first as (reasonable, IMO) ammunition.