I don't see anything about the vaccine that is likely to be harmful in comparison to the virus itself. The vaccine's RNA causes one of the virus's proteins to be created and displayed such that the immune system can create immune cells that can produce antibodies to it. Those immune cells stick around so they can react faster if it encounters that same protein again due to virus infection. It's a credible and well-understood process. I don't get why it is scary.
You mean the mRNA vaccine gets your system to produce a protein that is part of the virus, so your immune system can fight it by producing antibodies. This process is actually not identical to your body's natural reaction to the virus, and the role of antibodies vs t-cells is not well-understood yet, and it's never been developed at this large scale. If everything was as simple as you say, all the vaccines, since they all cause antibodies to be produced for the same virus, would also have the same side-effects and no worse than Covid-19, but the J&J one and AstraZeneca are associated with much higher risks of blot cloths than a covid-19 infection and mRNA vaccines, and they've eventually been banned here in Canada after a few publicized deaths. So let's be humble and not say that we know everything and shouldn't worry about anything.
btw, I did check the RNA sequence myself using RNA sequencing.
yeah right buddy, insert "you know, I'm something of a scientist myself!" gif
Life is a healthy respect for mother nature laced with greed.