You have to either be prodigiously stupid, willfully blind, totally corrupt, or some combination of the three to still deny that vaccines are the cause of autism, which they quite obviously are.
The real reason parents are in such denial about vaccines causing autism is that they don’t want to believe it was their fault. That’s understandable; it’s no different than the people who want to believe they were “forced” to get the Covid-19 vaccination. But if you’re dumb enough to believe anything that the medical authorities tell you, you simply have to own that. Because while not doing so isn’t going to mitigate any of the consequences you’re going to face, at least you might be able to avoid making the same stupid mistake next time.
And there will be a next time.