They can't be convictd of polygamy. They weren't legally married to more than one woman. There is no law restricting a person from having as many live in women in their house as they please, or having children with as many women as they choose.

And no matter how many times you say it, when the leader is convicted of being an accomplice to sexual assault, you can bet that he isn't the only person doing that. Just because they are extremely organised and know how to manipulate the system and the evidence, does not make them innocent. If you believe they are fine, then you are seriously missing a few screws. And i still don't think that you've bothered to get any information from the sources who disagree with your perspective, because if you did, I don't think you would find these people to be harmless and persecuted.