I haven't dug into all the sources, but I think there's a potential confounder here, or maybe even reverse causality. The author seems to assume causation when the studies only indicate correlation. E.g. the first link says "chronic loneliness increases mortality risk" but the actual source says "actual and perceived social isolation are both associated with increased risk for early mortality". So for example, it's p…
> If this were the case, we could defend claims like "autism increases mortality", because we already know that autism increases social isolation. Are you aware that life expectancy is much lower for peel with autism than the general public? https://pmc.ncbi.nlm.nih.gov/articles/PMC6713622/
I was not aware of this, but this actually supports my point, since the reasons in that study seem to be correlated physical comorbidities, so that makes the claim "autism increases mortality due social isolation" both easier to make (as you can misinterpret the stats) as well as less defensible.