The idea that Hhampuz is responsible for paying the participants while he too is among those not getting paid is absolutely ludicrous.
Their could have been some merit to the argument if he was supposed to be escrowing the campaign funds in advance to protect the posters.. But..
I looked at the OP of the campaign thread and dont see anywhere that says Hhampuz is guaranteeing payments, nor that he is escrowing the coin to pay participants. There is the quote LoyceV posted above, but that is ambiguous. For these reasons, I dont believe Hhampuz is obligated to pay participants.
Taking PN7's word for it Hhampuz was not "escrow" so he is not liable..
He very well could be if he was escrow though..