if you want to throw the cat amongst the pigeons, Hunter's real dad is Joe's brother. That family like to covert their family member's wife. Like father like son. Remember Hunter zeroed in on dead sons wife.

I think they knew waymarked that Joe was a liability unlike his brother James.

So they killed Beau knowing the other kid was James'. The dynasty goes on, just Joes wrecklessness is pruned out. Didnt work, Hunter was a fuck up like Joe and not like his real dad.