The Amish live a bit less Primally than you might think, at least in this area of Ohio. We live amongst a decently large community in my little corner, my special-needs daughter goes to her special-needs-only school with several of the community's kids, and we have struck up a friendship with one family in particular to the point of private invitations back and forth between our homes.
The Amish in this area take regular shopping benders to WalMart, their kids do get ear infections to the point of needing PE tubes (which they do get), I see them at the Cleveland Clinic (where I take my kid) as a matter of course, and since I regularly shop at an Amish-owned Amish-run salvage grocery (they get deliveries of non-homegenized local milk and local eggs which I buy) I see loads of them come to stock up on regular grocery store boxed factory food as that is what the store sells. I am acquainted with another family well enough to know that the mom is on an antidepressant and may be for life - husband told me. The last guy I talked to (he had parked his horse and buggy in the woods at the end of my driveway, and for two days I saw that rig in the exact same spot but never a driver so I hit the woods looking for him on the morning of the second day as I thought he might be lying in the woods somewhere needing help - turns out he was logging and just arrived at dawn each day) had icky rotten teeth. Many are seriously on the short side, men included, to the point that it literally turns my head when I spy a 6-foot Amish man. And I swap dietary war stories and recipes with a couple of Amish moms who themselves along with their kids have multiple food allergies and GI diseases.
Small family farms do not make enough to see them through the realities of life any more, so many men work the trades away from home (which fuels a vigorous sideline job industry for Non-Amish retirees here as driving service operators) and and the women take part-time employment as house cleaners and amongst themselves as shop help at places such as that salvage grocery I frequent.
While there is very much that I admire about their ways, the article kinda makes them sound like some super-race or something, and that is wrong.
So while I have not seem an autistic Amish child yet, myself, either, I have seen enough suffering to know all is not perfect in their world, healthwise, either.
I have a mantra that I have spouted for years... "If I eat right, I feel right. If I feel right, I exercise right. If I exercise right, I think right. If I think right, I eat right..." Phil-SC