No one can say, after looking at that video, that eating sugar and fructose is good.
Robert H. Lustig is an American paediatric endocrinologist. He is Professor of Paediatrics in the Division of Endocrinology at the University of California, San Francisco (UCSF), where he specializes in neuroendocrinology and childhood obesity.
This is the scientific explanation why sugar and fructose should not be eaten. Fruit juices are also not a good idea. This video is not easy to understand, but it can be understood.