First off --- your body provides the immunity, natural or vax

Your body needs a sample to do this, natural or vax.

The problem with the vax is that your body only gets a partial sample (just the spike protein, not the whole virus) --- so, your body doesn't know how to make a proper defense, even if the spike protein is up-to-date.

Then, there is the problem of turning off the mRNA.

This wreaks of a Bill Gates wannabe a hacker.