This is an extraordinary claim and needs evidence. Do you have a source for this?
However, throughout the study they are very careful to point out both sides of the arrow of causality.
Direction one, autism causes trauma: autistic children and adults are more likely to experience traumatic events because of being autistic. This seems relatively well known known and, sadly, understandable.
Direction two, early childhood trauma causes autism: the study says that while there is data showing a link, there's not enough for it to be clear. It definitely seems that far from all children who experience trauma will develop autism, and also that far from all autistic children got that way via trauma. Obviously this is a tricky area to get data on.
> it can often be trauma that causes the auto immunes... It’s hard to find a not traumatized autistic person
I think this could all be answered rather quickly with high quality Whole Genome Sequencing and a bunch of math so I’ve been going around evangelizing that idea and am working with some people who have independently come to the same conclusions.
It appears to me that there is a certain modality of thought that occurs much more often in people with hEDS, specifically those with TNXB SNPs. If you're super deep into type theory the odds substantially increase that you have hEDS - it's how I found out that I had it. And this same group is far more likely to be trans than the general population. A link that would be far more obvious if hEDS wasn't so underdiagnosed.
Additionally, it appears to me that mental disorders are often caused by auto-immune conditions which is extremely common in those with hEDS. So with a strong selection bias on math ability and trans and you're gonna end up with a lot of hEDS people who are strongly predisposed to mental disorders. I know someone with hEDS who obsessively studies the link between hEDS and serial killers - not something I want to be associated with the stats were pretty convicting. I do think it is possible that two TNXB SNPs are sufficient to explain why I think the way I do, why I'm far more like Ted Kaczynski than I would like to be. Of note; Ted Kaczynski did consider gender reassignment back in 1966.
Which is to say two things, I think what people are observing is a real phenomena and it is not purely from personal biases, though I'm not denying personal biases play a part in perception. And perhaps with that in mind the solution is in fact in diagnosing and treating the underlying auto-immune conditions. And to put a hat on a hat on my 'crazy' I think people are going to find that GLP1-Agonists like ozempic, specifically at the lower doses, are quite helpful in managing auto-immune conditions, among other things.