> A reduction is still a reduction, even if is not a 100% total and full stop

The advice I was given from our family doctor was that having had an utterly mild case of (actual) Covid, as I had (two separate times!), during the pandemic, was significantly better in protecting against both future infection - and subsequent transmission - than any protection I could have gained by vaccination.

YMMV. I suspect this is down to those who have had mild Covid pre-vaccination and those who have not.

Some of us didn't even know we had had Covid until afterwards, others think the vaccine saved them from an untimely death/hospitalisation.