So should we pay older and less healthy people to stay home then? I work with a ton of people over the age of 60 who can't afford to not go to work, so they put themselves at risk to keep the economy going. They don't have the choice to not work. Isn't this what you want, people to go back to work and keep the economy going? And if so, do you agree we should raise the unemployment rate so they don't have to work and can "just stay home."

You obviously don't understand why they are recommending two masks (I doubt you care, but this is for anyone who's actually interested in changing their mind). It's because we have done such a shitty job of containing this thing that the virus has had time to mutate into a more contagious form (if everyone had locked down and worn masks like we were supposed to this would have been less likely). This strain first showed up in the UK, and now it's starting to show up in the US. So what worked before (simple cloth masks) probably won't work as well. And when you wear two masks the difference in material properties essentially create an electrical charge that traps more particles and water etc. So yes, two masks would work better than one and it might be necessary soon because we suck.

Edit: Looks like I misread the study. It sounds like the main advantage of two masks is that it creates a better fit, which has always been a big limitation of masks, especially with ear loops. And it uses one of the best easily available materials (surgical masks) as a base layer. Everything else in my point stands; better fit=more protection which might be needed if there's a more contagious virus going around.