Thanks, I'm glad I proved that any two people can connect to the same coordinator and verify with each other they are participating in the same round. I don't know how you could possibly reason your way into concluding that anyone can't easily do this.
Are you seriously contending that in a WabiSabi coinjoin, two parties merging their coins have the required program set up to effectively communicate? And even if they do and communicate to "ensure" they're not subjected to a sybil attack (lmao, "trust me, I am not attacking you"), it still remains an entirely trustless process.
As I said, top-tier level of argumentation.