You really should watch the presentation all the way through. He deliberately states that there are good (neutral) and bad forms of sugar. It is the manner in which the different sugars are metabolised that determines its health risk. Glucose can be used by any cell in the body, but fructose needs to be metabolised by the liver. Fructose doesn't have the short term effects of alcohol, but it is metabolised by the liver in essentially the same way and causes the same health problems.
The problem here is when people say "sugar" is toxic, they specifically mean the ingredient used to sweeten many of our foods (table sugar, high fructose corn syrup). You don't say, I'd like two lumps of sucrose for my coffee, you just say "sugar".
I understand that there is a lot of crap diets and unverified "science" out there, but this doesn't seem to be the case if you actually listen to what he says.