There is zero difference between antibodies that are acquired through prior infection that attack the spike protein and antibodies that are acquired through vaccination that attack the spike protein.
The spike protein is how the virus enters our cells.
That is the point of attack and that is what the antibodies interface with.
I don’t know where you got that but of nonsense from… but it is kinda dumb.
Again, the protein changed, which is why the vaccine that was designed for the original form, was less effective with Delta and even less so against Omicron. The virus probably changed too, which would account for it’s lower lethality, but the fact remains that the vaccine does not produce antiviral Tcells … only those viruses that manage to infect your cells do that.
Virtually no vaccine entirely “prevents” infection. The real difference between the mRNA vaccines and attenuated or dead virus vaccines is that they provide protection without producing immunity and the latter provides protection without producing immunity. Again, that’s why the CDC changed the definition of vaccine to say “protection” rather than “immunity.”
You calling it nonsense does not make it so. The fact is, the mRNA vaccines contain NO virus, they only contain a replica of the protein. The vaccine causes the immune system to produce antibodies that recognize and attach to the spikes on the protein which prevents it from invading the cells. Without being able to invade the cells where it can reproduce, the virus is expelled from your body which is why you can be infectious for several days after exposure without ever being infected.