The headline (and its subheadline) is a fair and effective summary of the article. The rest of the article exists for anyone wanting the rest of the details. You only have to go to the first paragraph to hear about other types of masks, and the actual study is linked if you want to get really into the weeds.
It's a common mistake to mix up "you're not agreeing with me" and "you're not hearing me". I understand your point; it's just not well supported by the facts. In my opinion, the headline is just fine.
I agree with your fact, but not your conclusion. Someone reading only the headline gets the single most key piece of data/conclusion - that N95s are the way to go.
