Boneprone is the original "bro", so he gets a pass.
FWIW, I haven't looked to see what content if ama's is on there, but he's had alot of blowout deals in the past, at a time when tubes didn't exist and therefore tubes were not excluded in the license agreement.....so it's not out of the question that the content was paid for and is being used in a proper manner.
They wouldn't be the first webmasters in history to not send content producers a list of domains they've purchased that they may or may not use previously purchased content on.