What’s weirder is that the dynamics it creates means FLDS colonies effectively behave like Lion Prides
Men will actually be kicked out if they come of age without finding wives outside the community because the older men will have hoovered up all the eligible women already and see the young men as rivals for those womens’ attention, and on the extreme end as a lethal threat to those womens’ children since yes, FLDS men will occasionally form gangs that kill older men divvy up the “breeding age” wives, and kill most of the children both to wipe out the old groom and to prevent any children from taking revenge on bio-dad’s behalf over remembering the man being killed by new dad.
There’s actually occasional shootouts in northern mexico related to this wife taking behavior because the local authorities are less well equipped to go after the lunatics and also often take bribes from the ones who don’t feel like the effort of keeping it under wraps.