As funny as that video is, it also doesn't even come close to tackling the continuity logistics that prevent Magneto from making his way into the Marvel Cinematic Universe. As many of you already know, Magneto is the father of Quicksilver, who has appeared in the X-Men universe, as well as the Marvel Cinematic Universe. In the MCU's version of the narrative, Quicksilver's father dies with rest of the Maximoffs in an explosion caused by Stark Industries weapons -- as explained by The Avengers: Age of Ultron. It would take quite a bit to explain how a new version of Magneto could come to Marvel Cinematic Universe after so much has already happened, and in the end, it might just be easier to keep him in the X-Men world.