I've talked numerous times about the issues with and illogical events within tecnosgirl story (which btw she has not shown a shred of evidence for)
Chances are that tecnosgirl legitimately believes that her son's condition was caused by vaccines. However, if this was to be looked at by a professional, they'd clearly see that vaccines have nothing to do with it at all. Studies have shown again and again that there is no link between them. Additionally, many papers to the contrary (including the one that is considered responsible for the anti-vaxxer movement) have been retracted as they couldn't stand up to repeated testing.
I direct you to look at the https://www.aap.org/en-us/Documents/immunization_vaccine_studies.pdf
To the people who will call me a pharma shill or suggest that these studies have been somehow bought and paid for, I suggest you look at the study that the anti-vaxxer group SafeMind partially funded. (Spoiler: it came to the same conclusion as all the others and SafeMind got pissed)
http://www.pnas.org/content/112/40/12498.abstract
It speaks volumes about the anti-vaxxer movement when they are more willing to believe a random person on the internet who has never provided proof of any of her claims rather than evidence that comes from repeated experiments and peer review. Quite frankly, if you look at the anti-vaxxer movement, you will find the many of the same people who believe in such nonsense as flat-earth and chemtrails. (Don't believe me? Just look at the people's previous posts.)
At the end of the day, vaccines are safe and effective for the vast majority of the population. There are some people who have adverse reactions to vaccines and they will be recommended to avoid them, but you will notice that these adverse reactions aren't autism or any condition like it.