[bitshiftfaced]

Seems more nuanced than that. Herd immunity is a function of how contagious you are, which with COVID is a function of how symptomatic you are, right? I think someone who's having coughing fits will more likely spread it. If the vaccine decreases symptoms, then it strengthens herd immunity.

Also, even if herd immunity is impossible, some reduced spread is a good thing by itself

[collias]

Data from other countries with a >90% vaccinated rate for Covid would suggest otherwise. Take a look at Israel or Ireland in the past few months, for example. Israel is currently debating whether or not a 5th booster will be enough as they're seeing record infections.