Such a smart person only looks at what happens in the stomach and the duodenum. They forget the effects consumed food has on the micriobiome in the bowels. There is a balance between several families of bacteria, several families of fungi and some say even several families of protozoa. Consuming large amounts of HFCS changes the composition of microbial lifeforms in the bowels , AKA gut. That is a known fact.
It is also known that obese people are so unlucky to often have candida fungi infections. And as i mentioned before, fungi love HFCS. That is one less enzyme needed to change sucrose to fructose and glucose. Both needed for aerobic or anaerobic digestion by fungi.
Um, you do realize that cane/beat sugar is 50% fructose, right?
And that HFCS is 55% fructose.
Both are basically identical, chemically.
Sucrose is immediately separated into fructose and glucose in the small intestine. So, again, both are digested by the body identically. Surcase enzymes do it within minutes of digestion. The lack of this separation for HFCS is irrelevant for digestion.
So, lets use simple logic here: Both are digested by the body as monosaccharides glucose and fructose in roughly the same amounts.
This would make it chemically impossible for one to have a negative effect on the bowels and not the other.
It seems to me you're following some alt-med guru/echo chamber.