When you were talking about "80%", I thought you were referring to reduction in transmission. The article you linked only talks about the reduction in numbers of cases (and mostly symtomatic cases), which is not the same thing. By "reduction in transmission", we are talking about the chances of someone catching Covid from someone already infected with it.

>Your original statement, and some of your followup statements, argued against the vaccine reducing spread at all.

Not that it matters much, but I started by saying that it does not confer sterilising immunity (something even the article you linked suggests could be true), later correcting it "it's not know if it does". I've also said, many times now, that it may have some limited effect on reducing transmission.

I'm still not sure why the obsession with transmissison, anyway.