Unfortunately, in this day and age of Internet access, anyone can find data to support their POV. I could do the same.
However, I prefer to follow a doctor who has spent the last 20 years of his life on research and patient care of celiac patients. He is well respected and known to be the "expert" in the field.
And I quote, "Thus the "collision" between gluten and mankind began." He goes into a complete history of man the hunter/gatherer, and man the agrarian cultivator.
"Harvesting of wheat grains with it's complex gliadin amino acid chain that is poorly digested by mankind, was the beginning. Man continued to eat food that did not agree with him." (wheat & dairy)!!
I believe had we stuck with meat, veggies, fruits, nuts, and seeds, we wouldn't be where we are today.
But, I would suspect I am wasting my breath here, because I am sure you will post your next link.