Paynyms only work because the US government chose not to take down paynym.is, a centralized service. Nothing stops them from replacing a username's BIP47 code in the database to route all the funds from new connections to the FBI, though. Cahoots (Stonewallx2 and Stowaway) only work by exchanging QR codes now, far from being as useful as they were when Soroban worked. Ricochet should work with your Dojo as the coordinator, but you'd also be sending a fee to the wallet now controlled by the FBI. Which you can do if you want to, but I would advise against sponsoring terrorism.