Because autoimmune reactions to antigens either show up in 3 months or they don't. Vaccines are tiny and you don't take them chronicially. They aren't like me

Because autoimmune reactions to antigens either show up in 3 months or they don't. Vaccines are tiny and you don't take them chronicially. They aren't like medicine. The bad side effects are entirely your body attacking itself. And there's a well-studied branch of medicine dealing with that. There's no autoimmune disease which emerges only >2 years after exposure to an antigen. In all of medicine that phenominon doesn't exist in order for to happen after an mRNA vaccine.