Harder to digest is a good thing, as far as many aspects of this issue are concerned: Fiber is harder to digest than sugar.
Nothing is cut-and-dried. The problem with hydrogenated oils is not that they're chemically-altered nor that they're harder to digest.
Since we've avoided sugar and trans-fatty acids we've gotten healthier and lost some weight. Any sugar or fat you avoid is good; but don't just stop at HFCS and hydrogenated oils. Again, without evidence there is no reason to believe that they're any worse for you than any other ingredient in the same class.
Keep in mind that those commercials are put out by the companies that MAKE the HFCS--very unbiased I am sure.
Harder to digest doesn't mean it is good-it means that your body doesn't process it well and then it SITS there or is converted to something that isn't used efficiently, like fat.