See now, some of us remember vaccines being the medical salvation that they are.
Uncounted multi-millions of lives saved with vaccinations but a few hundred anecdotal hearsay suspicions of inoculations causing Rainman syndrome. I had an autistic cousin the same age as me. I only saw him once or twice in my life because he was institutionalized at a young age. He was born before vaccines were a thing.
Now, having said that, I am horribly allergic to a compound named Thimerosal. Actually I'm allergic to metals and Thimerosal is a mercury compound that has been used as a preservative in vaccines and other things such as eye drops. I used to have to watch out for it on ingredient lists.
FRom Wikipedia:
The pharmaceutical corporation Eli Lilly and Company gave thiomersal the trade name Merthiolate. It has been used as a preservative in vaccines, immunoglobulin preparations, skin test antigens, antivenins, ophthalmic and nasal products, and tattoo inks.[4] In spite of the scientific consensus that such fears are unsubstantiated,[5][6][7][8] its use as a vaccine preservative was controversial, and it was phased out from routine childhood vaccines in the European Union, and a few other countries in response to popular fears.[9]I cannot tell you the vast number of times in my youth Merthiolate, or "Monkey Blood", as my grandfather used to call it was used on my wounds with no reaction at all. Then as a young adult in USAF I broke out with a horrible rash and watery blisters from the cheap metal chain that I had to wear around my neck. Then after that I used eye drops with Thimerosal in my eyes and they became more bloodshot than the worst stoner you ever saw. But now I don't have to worry about Thimerosal because it has been removed from all products of personal use.
The point is that the anti-vaxxers jump on a circumstance and equate it with a cause. Post hoc ergo propter hoc is a logical fallacy of the questionable cause variety (Latin: "after this, therefore because of this"). Vaccines are not the problem. Wishful thinking and confirmation bias is.
New age searching the cosmos for why a child is autistic then gasping for a tenuous cause in desperation.
Pro-vaxxers are free to drink the corporate drug pushers' purple Koolaid, but you're not going to mandate anyone else to do so against their will.