They don't want an open relationship. What they want is a relationship like the kings in the Bible had: one husband with multiple wives. The men get to be polygamous, but the women are still monogamous.

Well, based on what this post is saying, they aren't trying to convince their wives to be in an open relationship, they're trying to pursue polygamy. It says "if you limit men to only one wife," it doesn't say "if you limit people to one spouse." They want it one sided.

These are the type that would believe in killing a woman for having sex with multiple men. Not something they would say out loud yet, but they view marriage as a husband-master/wife-slave thing.