Parent post is a good example of quibbling over words.
The stuff is called "high fructose" because sucrose, or normal table sugar, is one fructose molecule bonded to one glucose molecule but HFCS contains 5% of fructose that is not bound to a glucose molecule. This is significant. Hydrogen peroxide used in wound treatments is only 3% H2O2 and 97% H2O, but has very different physiologic effects than plain H2O.
While HFCS could be used in lower quantities for the same level of sweetness as sucrose, it is often used to make the product sweeter than could be done with sucrose alone. As is the case in many soft drinks sold in the USA. But the more significant concern is that HFCS laden foods and drinks cause one to crave more since the HFCS interferes with the "I've had enough" mechanisms that normally govern food/drink intake. And another concern that bears repeating is that HFCS puts an increased burden on the liver and the blood glucose homeostatic mechanisms that are adapted to handling normal table sugars.
Again, my personal concern is that HFCS on the label is a marker I can use to avoid foods and drinks that predispose me to exercise induced asthma problems. And I don't care whether it is the HFCS or some other crap that is often used when HFCS is adulterating the food.