They have some good examples in that first part but the overall, conspiracy, message they are trying to express is crap. Religions were not created to control the masses.
Read this book called Power of Myth by Joseph Campbell. He basically tells the same message, of religions (he calls them all myths) from different times and different regions with no relation to one another in anyway, coming up with the same basic themes in their myths to answer questions they could not, themselves, answer. Virgin births, afterlives, deaths and resurrections, and many others are present across the spectrum of religions/myths/legends throughout time.
The basic idea is that these things are meant to be taken symbolically, not literally. You are meant to get the message that there exists something out there that is beyond our reach.
I had to read the book for a philosophy class and loved it. It kind of helped me come to an agnostic view on religion, afterlife etc. I don't follow any religion literally, but i do try and be a good person, productive, just etc.