That's clearly not true given that the number of cases in highly vaccinated countries is as high or higher than before.
Firstly, NBC? They're not exactly going to give you a balanced view, are they. Anyway. The article is about an academic study. Those are near worthless: even theoretical studies with 100% external validity frequently come out too late to be informative. The real world data is what matters here. Perhaps someone who was literally just jabbed spreads it less, but if the protection lasts three months it's irrelevant and misleading to make a temporally unbounded claim "vaccinated people are less likely to spread COVID".
Firstly, NBC? They're not exactly going to give you a balanced view, are they. Anyway. The article is about an academic study. Those are near worthless: even theoretical studies with 100% external validity frequently come out too late to be informative. The real world data is what matters here. Perhaps someone who was literally just jabbed spreads it less, but if the protection lasts three months it's irrelevant and misleading to make a temporally unbounded claim "vaccinated people are less likely to spread COVID".