"Response" is many different things. The vaccine boosts response b/c you have antibodies, so it's much less likely that your body has to do a hail mary las ditch (cytok storm).
> why so many governments have stopped publishing the case rate breakdowns by vax status.
But there's enough data out there to have a clear picture: vaccines or previous infections won't protect you from being infected by the recent strains (BA.2.75, BA.5, etc) but will protect you from severe disease or dying. Maybe it can be improved by nasal vaccines (what happened to those?) but who knows...
> It makes a kind of intuitive sense: if you make your own body produce some key portion of the virus, maybe your immune system gets tricked into thinking it's not such a big issue?
This one is completely off the mark. For starters, not all vaccines have your "body produce part of the virus", yet all help to prevent severe cases and death.