Without seeing the video (why does EVERYTHING seemingly have to be on YouTube anyway), I would say the premise is true. More importantly, the inverse is true. You can be a decent designer without any creativity whatsoever. Usually these people are called copycats, but that doesn't change their ability to design. Unfortunately, designers that are not creative as well are relegated to other fields as their lack of creativity is seen as a weakness and inability to design; and I don't see this as a negative because most people want original designs which necessitates creativity. Moreover, in this sue-happy world we currently live in, lack of creativity may well mean financial disaster for any design studios that would employ these designers. Therefore, though the premise may be true, does it really matter? Design is often a natural talent for creative people, and can be taught for those it isn't, but how do you teach creativity?