Goldilocks > Let’s all face up to the facts:
You are probably right about entrenched opinions, and it is a sad fact that people follow “beliefs” here rather than trying to find out information. I think psychologists call this “crystallization” – early on information trumps on the further one. Does anyone have an insight what was typical initial information that caused people to conclude that masks are worthless? Was it that they didn’t like it first and then found justification? something they read or heard from friends? something they first “figured out” themselves, like “a small virus will not be stopped by a large filter, obviously” ….
the second interesting part that anti-maskers often point fingers to cloth or even surgical masks –
see they don’t work, only K/N-95s do! I would think that they will then start wearing K-95, but not their thinking seem to stop right there – “see they are wrong”.