Thanks for the link, I've never seen this clip before. The information is accurate, except for the castration thing. Although I think they worded it as salaciously as possible to paint Mormons in the worst light. (nobody talks about "endless celestial sex" in church)

Mormons all claim to be Christian, that's the official doctrine. Like you said though, it breaks from mainstream Christianity dogma, so other Christians are always calling them out about it.