Since autism in the 70's used to be one out of 500 children and now it's one out of 30, parents must be getting exponentially weirder or the vaccines are getting more toxic and numerous.
To be fair, the majority of that is down to a change in classification. High-functioning autists, the kind who can get by in life independently but are just very poor socially etc., were not diagnosed as autistic back then.
That is not to say there is not a real increase. There is. But it's nowhere near as dramatic as that statistic would suggest.