I've seen this video before. Pretty interesting. I can't really comment on whether it's true or just some crazy conspiracy theory, as I really don't know much on the topic. But I go with it. (I've never been a fan of the scholarly/academic spelling "Yahweh". The fact is, it's not known to be "Yahweh" with any certainty, whereas the "Jehovah" spelling--even if wrong--at least has historical basis.)