>>13153703True, but we're talking about unintended, unanticipated side effects. I'm fairly sure that the vaccine causing you to develop antibodies was an intended effect...
By the way I'm not saying you should blindly trust any medicine. I do think exercising caution is healthy. For example, we do know that adenovirus-based vaccines give you a small chance of getting a blood clot, so you should probably avoid them.
But this begs the question: if the vaccines are a big conspiracy to exterminate us, why did health authorities immediately react and retract the vaccine, instead of doubling down? I thought they wanted to kill us?
As for mRNA vaccines, it's been a year since testing began, and hundreds of million of people have been successfully vaccinated, with 0 (zero) long term side effects (you obviously have allergies and the like, which is to be expected, but they get triggered immediately)
I think this should be sufficient evidence for any rational person that the mRNA vaccines are safe. But I know that with anti-vaxxers, we're usually dealing with flat earther tier types, who have a different interpretation of "standard of evdence"...