not that I in any way condone the practices of this cult, but it must be pointed out that until last year it was legal for a 14 year old to get married if they had the consent of their parents/guardians...
on the subject of incest, there are rumblings that the number of children there with congenital defects is above the norm and suggests incest...
...from what I know of genetics a one time interbreeding is not 'all that bad' but repeated offenses is when the problems truly start...and again it looks like there have been repeated cases of inbreeding which is just plain stupid if you care about your offspring...obviously the adult males don't...