Earlier quoted context omitted.
You're just being intentionally obtuse. This attitude is exactly why it's pointless to list sources to pretend-inquisitive strangers on the Internet.
I honestly don't understand which bit of this quote, from your own source you don't understand: “Seriously people- STOP BUYING MASKS!” he wrote. “They are NOT effective in preventing general public from catching #Coronavirus, but if healthcare providers can’t get them to care for sick patients, it puts them and our communities at risk!” Is he saying that N95 masks don't work at all? That they only magically work for…
The masks ARE effective in prevention COVID (both ways), and there is no demonstrated risk in wearing masks wrong. They lied on both accounts providing fuel to anti-masker movement. And yes the logical inconsistency of insisting masks are ineffective yet are necessary to frontline workers were pointed out year ago - you're not breaking any fresh ground here.