Google tells me that the myth you’re spouting was in fact made up by a YouTuber. Did you never bother googling it yourself? I thought you folks prided yourselves on “doing your own research”.

From Britannica:

“This claim was promoted by David Martin, a financial analyst and self-help entrepreneur who operates a YouTube channel pushing COVID-19 conspiracy theories.

As of January 2021, research is ongoing to determine whether COVID-19 vaccines prevent transmission of the COVID-19 virus. However, contrary to Martin’s claim, neither U.S. Centers for Disease Control and Prevention and the U.S. Food and Drug Administration stipulate that vaccines must both provide immunity and block transmission of a virus.”