They did not ask me to do this. That’s it. Who knows if they made any sales. They’re probably keeping it if they did because they have not contacted me that they are conducting this. That’s it.

How would that reflect on you? He made a clear disclaimer against any association with you. For the customer they are clearly not interacting with your business, just a person buying from you and accepting payment in Monero. If this listing were to appear as an official listing without a clear disclaimer I understand the objection. Perhaps you've copyrighted those photos and thus you wish to claim copyright over them maybe that's the objection I could see that too but that seems to be fair use from my understanding of the law.