I think you're off by an order of magnitude (5-6%) if you're referring to the risk of infection vs not wearing a basic, correctly worn surgical mask. And this is pre-omicron; omicron is far more transmissible.

Happy to be corrected.

That 50% plus number is highly contested. The study cited for that does not necessarily support that conclusion.

No. Cloth masks are understudied and probably don’t do much. What does do a lot, probably, is a dynamic where millions of people wearing ineffective masks thinking they are effective, and making bad choices entirely due to that bad assumption, like not wearing an N95, closing distance with people, or going indoors when it could have been avoided.

https://vinayprasadmdmph.substack.com/p/mask-studies-reach-a...

Estimated effectiveness is not empirical evidence. There's nothing scientific about just guessing random numbers.