Or not effective enough?
All the evidence I've seen, seems to be that even one dose offers a very high level of protection against becoming seriously ill, even if it can't protect you 100% from ever returning a positive test.
Why do some people seem desperate to believe that vaccination won't help, that there's still a high possibility of getting long Covid after the jab, that mutations will render it useless etc?
To my mind, most of the most vulnerable are now vaccinated or will be very soon, which is excellent news and really should mean we can start getting back to normal. Why do so many seem to want to believe otherwise?