You can't get around the laws that easy
As I am sure you know. Not that any US LAws have been broken.
That Cambria list - is just a list. It is just suggestions as to what to avoid to avoid drawing attention. There is nothing special about it - it could not be used in court against anyone.
It is odd that they made those selections. Maybe there were other reasons as well. If it is one of there less profitable sites - and raises some legal questions - maybe that plays into the picture as well.
I think it is just a case of trying to be the least noticable fry in the box when the gov't decides to go after someone. Right now - everything is ok, but who wants to be the next test case.
Personally, I would rather they pick on CyberErotica - as I think they have the best lawyers