^ As you can see, the very existence of coinjoin coordinators providing non custodial privacy reveals that these users are trying to scam people out of their data and coins with their "mixing sites".  Since zkSNACKs proved that you can provides privacy without taking custody, this eliminates any doubt that the mixing sites are purposely designed as trust holes.  This is why these scammers are insisting that noncustodial privacy services no longer be offered to anyone so the scamming sites gain plausible deniability as potential legitimate services.