I'm not sure that's going to turn out to be the case, else why are we discussing booster shots in the next few months? Compare those who had SARS-1 still having immunity to SARS-2 after a couple of decades, which is pretty good immunity.
See for example
https://www.hartgroup.org/natural-vs-vaccine-immunity/
which makes perfect sense to me. I'd have to see some pretty convincing evidence to persuade me that this was wrong.
Of course you may well argue from a comfort point of view that it is better to have a vaccination than the disease, which is most cases will probably turn out to be true! But I have absolutely no idea from a medical point of view why for example we are insisting on vaccinating people who have already had the disease, it makes zero sense.
But we're going to hit 90% of adults with one dose, and only a few % points below that for the second - and significantly higher than that in the groups that are actually in danger from the disease. If this was really just about protecting people from a disease then this seems a very good time to say 'that went surprisingly well, time to get on with getting back to normal now.' Instead we see an ever-more-shrill and ever-more-desperate ramping up of propaganda against the small minority that haven't 'done what they were told to do'. Why?
I also refer Israel and Iceland and some of the 'blue' states of the USA, which have similar high vaccine uptake to the UK and yet have recently reintroduced restrictions such as masks and/or distancing. I'm really not convinced that high vaccine uptake is being particularly successful at stopping these authoritarians.
In any event, whatever the level of uptake, there appears no logical argument for vaccine passports, as the vaccines do not prevent infection and do not prevent onward transmission. (Compared to the fact that there *is* some logical argument for 'testing passports' - as abhorrent as they would also be, at least they make some tiny degree of sense). See for example
https://www.hartgroup.org/vaccination-prevents-transmission-myth/