In addition, persons that engage in certain transactions with the entity designated today may themselves be exposed to sanctions.
Regardless it's to save the participants or not, but he as a campaign manager need to take care with himself because if the government want to catch anyone that associated with Sinbad, he could be the first target, then the participants. The participants need to understand about that.
Some user included me, received message from Binance that we recieved fund from Sinbad signature Escrow address and we have to give cleanliness that from where we recieved fund and what is our relationship with address owner.
But he has a point, he meant the participants need to use new address and they can trade it through no KYC P2P or DEX without link your identity (if the previous Bitcoin address is linked with CEX or your identity).
If he is concerned about the safety of others, just let each campaign participant send a new Bitcoin address to which the debt will be paid.