Correct but you need to take it one step further. When a third party debt collector sends you a notice...ALWAYS respond in writing via certified mail that you deny the debt and demand to see the original debt instrument with your signature! Do not let the third party debt collector's demand letters go without a response. Several demand letters without a response can be construed as acceptance or acknowledgment of the debt.
To a limited and dangerous extent, yes, and this can be used to initiate administrative actions. The problem is that the initiator, the debt collector, knows that their claim is fraudulent in fact. It's one thing to have limited liability to attempt to collect - its another thing to defraud the court by claiming actual creditor status that you know you don't have. Because even if you win a judgement, your victim can later file against you and have that judgement vacated, and criminal charges pressed, for that very same fraud against the court.