I should believe what you say over what OP says because, why? Becuase you're special? OP shows a photo that clearly shows some kind of demonstration. Granted. Not strong proof, but you give no sauce at all. The Covidians do this all the time. "Masks work!" They give no evidence to back that claim. Are you a Covidian? Back up your statement if you are going to directly counter another claim, or state that it is your educated speculation, which would be a legitimate addition to the discussion as well.
I should believe what you say over what OP says because, why? Becuase you're special? OP shows a photo that clearly shows some kind of demonstration. Granted. Not strong proof, but you give no sauce at all. The Covidians do this all the time. "Masks work!" They give no evidence to back that claim. Are you a Covidian? Back up your statement if you are going to directly counter another claim, or state that it is your educated speculation, which would be a legitimate addition to the discussion as well.
Do your research