If people told you that the vaccines would lower your chances of contracting every known major variant and lower your chances of a serious illness, they were right. If they told you that the vaccines were guaranteed to completely prevent every variant of the virus, they were lying to you. If you heard the former but interpreted it as the latter, that's on you.
> According to an archived version of the dictionary's website, Merriam-Webster formerly said a "vaccine" was "a preparation of killed microorganisms, living attenuated organisms, or living fully virulent organisms that is administered to produce or artificially increase immunity to a particular disease."
> The new definition of "vaccine", published in May, reads: "a preparation that is administered – as by injection – to stimulate the body's immune response against a specific infectious agent or disease."
https://www.usatoday.com/story/news/factcheck/2021/11/30/fac...
A vaccine that doesn't provide immunity - in other words, not a vaccine, but instead of admitting that, let's change the definition.