If a tiny increase in the amount of amino acids found in the body already can cause autism, that's really really surprising, to the point where it's much more likely that this result was just due to randomness.
If you take autistic children and test a hundred things that their parents were doing, one will probably come out statistically significantly higher, just by chance.
They asked about 350 mothers to think back and recall if they drank diet soda daily during pregnancy. Of their children, 235 have since been diagnosed with autism and 121 were in a control group. From their data, the kids with autism were about 3x more likely to have moms who remembered consuming daily sodas during pregnancy.
The best you can say is they have a hypothesis (inkling?), and much more research is needed.
There is literally billions of dollars to astroturf the safety of aspartame.
I don’t know if there is a correlation with Autism, but it does not seem completely inert either. I also have a hard time believing statements like - it can only do the following things to the body. We were told similar things about mRNA (can’t travel outside the localized muscle area, destroyed by the body in x many days, etc.) that may have been true in a lab, but was not in practice.
Do you have a source on that?
not restricted to the injection site: https://www.thelancet.com/journals/ebiom/article/PIIS2352-39...