Personal attacks are not allowed here, regardless of how wrong someone else is or you feel they are. If you wouldn't mind reviewing https://news.ycombinator.com/newsguidelines.html and taking the intended spirit of the site more to heart, we'd be grateful.

>Immediately before that: The Pfizer BioNTech vaccine against COVID-19 has an efficacy of 95% against symptomatic SARS-CoV-2 infection.

I'm not sure how that contradicts the parent post? You could be protected from hospitalization/symptoms, but still be transmitting it.

Argumentum ad hominem usually implies an irrational opinion or manipulative rhetoric.