It's only incriminating because it can be taken out of context..
For example, the cloth mask is effective at protecting others from us. It's not effective at protecting us from virus that has already become airborne.
He was consistent on that.
People still insist he lied about the cloth masks.
That's why he would put his mask on before stepping in front of a camera and take it off when the camera was off.
That's why he would wear 2 masks when, as you say, 1 is effective.
That's why, depending on the situation, he wouldn't wear a mask but have 1 readily available in case a camera showed up.
When you say "effective" do you mean 100% effective or is maybe 50% good enough to be considered "effective."
Cloth masks reduce transmission of droplets. Aerosols, not so much.