Yeah, the video is funny, but if you look at the comments, it seems to be having exactly the impression you described. It also reinforces the idea that science is always changing, and that "old science" cannot be trusted. In fact, science builds on itself. Once a hypothesis is tested by enough experiments to become a "theory", it becomes extremely unlikely that it will ever change as a result of further experimentation; it may or may not be valid in other domains, but it will always be valid in the domain in which it was tested. So, for example, relativity boils down to classical mechanics for low speeds, and quantum mechanics reproduces classical mechanics when you solve the equations for large sizes. Classical mechanics is still what engineers use in the domain of low speeds and large sizes. It annoys me to no end that people don't understand this.