Not true at all. That article never claims that or even implies that quite the contrary it tells you that:
"
Gene duplication (or
chromosomal duplication or
gene amplification) is a major mechanism through which new genetic material is generated during
molecular evolution. It can be defined as any duplication of a region of
DNA that contains a
gene. "
Until this was observed and understood one of the problems for evolution was "How do key genes mutate without killing the host?" Gene duplication answered that problem. One of the gene continues to do the work of the old one and the second is free to mutate and add new traits.
Thanks for linking the article that I was about to link for you. Now you know how "new information" can be added to the genome, and this is only one way.
By the way you could have saved yourself this embarrassment if you had read some of the comments on the video that you linked. I saw that one poster brought up the exact same claim that I did:
"it is not the slightest bit controversial. one example would be gene duplication followed by mutation of the copy. that's why we see in three colours- an opsin gene was duplicated and a precisely identified point mutation resulted in a different wavelength of light being sensed. this is common to all old world primates and absent in all new world primates. evolution has a beautiful explanation for this. what's yours?"