The rise in diabetes, heart disease, and liver damage, are seeming to indicate that fructose consumption IS in fact reaching levels that are manifesting toxic effects in the form of those diseases.
Maybe. But there is surprisingly little evidence to support that hypothesis. I was unable to find a single controlled study, with either people or animals, that linked HFCS to obesity, if the HFCS was consumed instead of other sugar. If you search, you will find a LOT of conjecture, but almost no science. Furthermore, HFCS is an American thing. Most other countries don't consume much of it. Yet the obesity epidemic is a world-wide phenomenon. Mexico has a bigger obesity problem than America, but consumes far less fructose. Fructose may be part of the problem (or may not be), but it certainly isn't the only source of the problem.