First of all, yes your definition of a vaccine is fine, but it doesn't negate what I said. Vaccines serve as a way to "train" your immune system to fight a specific thing by historically providing a weakened or impotent version that is easy to kill. However, mRNA vaccines are a much different methodology and can be very very specific on targeting, by creating individual spike proteins. However, they fail to provide significant protection against mutation in some cases.
The vaccines helped in the way that they prevented the virus from being able to replicate and cause serious illness, your immune system had to still figure out how to kill the thing on its own. So the vaccines on their own did not provide you with immunity, (not even close the level of historic, or "perfect" vaccines do), they did help train your immune system to kill the virus. That is how they are helpful for the symptoms of omicron not the spread. Because the spike proteins that were effective for alpa/delta are less effective for Omicron, it is still causing disease. Again, because your system has most likely already fought off the Alpha and Delta strains, you are unlikely to develop serious illness if you have natural immunity or have been vaccinated.
There is no "lying" here. And your sources of wiki-pedia vaccine definition and a CBS news article are not disproving anything that I have stated.
The vaccines helped in the way that they prevented the virus from being able to replicate and cause serious illness, your immune system had to still figure out how to kill the thing on its own. So the vaccines on their own did not provide you with immunity, (not even close the level of historic, or "perfect" vaccines do), they did help train your immune system to kill the virus. That is how they are helpful for the symptoms of omicron not the spread. Because the spike proteins that were effective for alpa/delta are less effective for Omicron, it is still causing disease. Again, because your system has most likely already fought off the Alpha and Delta strains, you are unlikely to develop serious illness if you have natural immunity or have been vaccinated.
There is no "lying" here. And your sources of wiki-pedia vaccine definition and a CBS news article are not disproving anything that I have stated.