I don't think that most would be called mansions if the Unification Church did not own them. Moonies are brainwashed, and Moonies want to brainwash you. I have read books that explain that I am brainwashed or experiencing a mental disease because I believe that Sun Myung Moon is the messiah. The Beatles, Mormons, and Amway salesmen are all cultists. The Boston Pops, Southern Baptists, and General Motors salesmen are not cultists.
Moonies use deception in everything.
No religion, including Sun Myung Moon's, teaches that it is good to lie, cheat, murder, commit adultery, etc. There have been examples of deception. However, even those who have practiced it know it is wrong. It is just that their morality is not up to the challenges of life. Consider, the Unification Church has never participated in a holy war, has never killed, tortured, or even persecuted people who did not follow its teachings.