This isn’t evidence of being nuts. This happened to my second cousin: she was totally normal, then had a measles vaccine (before the combined MMR was available), had a bad reaction, and spent the rest of her life in a residential home, severely learning disabled and suffering from epilepsy. It happens.
It’s really upsetting that people trying to speak out about this are attacked, to the point where anyone not ardently praising vaccines are ostracised. The pharmaceutical companies manufacturing these medications are now beyond reproach, and their naive customers are militantly protecting them from any criticism. Suffering families are being punished and demonised as liars for not going along with the popular narrative.
Vaccines are medications, and like any other, they can have side effects. Like many other medications, rarely, these side effects can be severe. Insisting that vaccines are the only medications that are magically 100% safe is just as nuts as saying that vaccines are useless autism shots.