The study is an admission that standard, loose-fitting, flimsy masks which are NOT designed to filter virus particles are NOT effective at preventing the spread of Sars-CoV-2.
It is of no surprise that the study found that FFP3 masks are effective, but what was perhaps surprising was how ineffective standard flimsy masks were.
People who seek to mandate that people wear ineffective face coverings "to protect others" appear to be relucant to acknowledge this study, nor do they wish to acknowledge the incredible success of the vaccines.
Mask wearing has not made any measurable difference to infection rates anywhere. It is often the case that when masks become mandated, cases soon skyrocket; we saw that in many countries and provinces. It is also often the case that cases decline after masks cease to be mandated.
However I am not suggesting that mask mandates cause an increase in cases (though I do believe they give people a 'false sense of security' and I have seen clear evidence of this myself) but the idea that they reduce cases is not supported by any real-world evidence whatsoever.
The virus is endemic and our best protection is to build up our level of population immunity; the most effective way to do this is for as many people as possible to be vaccinated, and to get us back to normal.
I find it incredible that the most vocal people against vaccine effectiveness tend to be those who seek to mandate the wearing of flimsy loose-fitting masks which aren't designed to filter virus particles. It's pretty obvious what their agenda is, and I utterly reject their authoritarian ideology.
Here are some utterly crazy individuals with authoritarian agendas who dismiss the effectiveness of vaccines:
Warning: the above tweets contain misinformation about the effectiveness of vaccines; the examples above are to illustrate how crazy the most vocal pro-mandatory mask campaigners are.