First, thank you for an interesting theory that is worth researching. I had not thought about the possibility of enzymes being included in the product. It would be interesting to know what portion of enzymes survives the process, packaging, storage, temperature fluctuations, and human ingestion to be able to affect the digestion of other foods. My educated guess would be very little, but it would be interesting to find out. It would also be interesting to know if the types of enzymes used could even function at human body temperatures if they arrived unharmed in the digestive tract.
There is no doubt that ingesting sugar could lead to a "sugar spike" in the bloodstream, but it's unlikely to cause any harm in a healthy individual. Your post implies sugar spikes cause Type II Diabetes. While sugar spikes can be a symptom of Type II Diabetes, there is no evidence that they are a cause of the disease. In fact, there is quite a lot of evidence suggesting sugars do not contribute directly in any way. They do, however, contribute to obesity which is a considerable factor. One could ingest large quantities of fruits for a quick fructose rush immediately followed by sucking down pixie stix for their sucrose topped off with several spoonfuls of honey (which is similar to HFCS) daily and not develop diabetes from it.... unless they got fat from it & lack of exercise.
It's a bit odd that you attribute Type II Diabetes as being caused by a sugar spike b/c the body couldn't produce enough insulin -- when type II diabetes is generally caused by insulin resistance. The pancreas pumps out enough insulin just fine -- just not enough relatively b/c the body resists using it. It's the body's cells that resist absorbing the sugar with the help of the insulin that is the culprit.
The most prescribed treatment for type II diabetics is to avoid fatty foods and start exercising regularly b/c more than half the cases are caused, at least in part, by being overweight. People generally know that diabetes is a sugar-related disorder, so it's easy for people to get confused and mistakenly link the intake of sugar with being one of the many contributing factors that causes the disorder.