There is no question that the Czech Republic’s remarkable progress on COVID-19 was the result of requiring an entire society to wear face masks.
Source: How Czech Republic beat COVID-19: Require everyone to wear face masks
The Czech Republic has the 9th highest mortality rate in the world due to Covid of 221 countries and territories ranked by mortality rate
Czechia was ground zero for the #MasksForAll meme that began in March of 2020, falsely claiming that simple homemade cloth masks worn by nearly everyone had stopped Covid from spreading. This was a model, the proponents said, for what everyone in the world needed to do to stop Covid.
It was 100% bull shit. Czechia ended up with one of the highest mortality rates in the world.
The Experts were wrong.