Or, they do know and more detail wasn’t relevant at the complaint stage of the civil case, whereas it might be to the actual trial and to the parallel criminal referral that it has been reported that DoJ is investigating.
A civil complaint is not required to be, and generally is not, a catalogy of every piece of relevant information the filing party has. And it especially isn't a catalog of everything they know where a civil lawsuit isn't the venue for addressing it.
> If the CFTC believed Binancing knowing facilitated criminal activity on the part of Bitzlato, that’d be in the complaint.
No, if the CFTC believed that, it would be in the criminal referral to DoJ, and, if DoJ could support it to the required level to move forward, it would be in the criminal indictment DoJ would seek from an appropriate grand jury. Those typically lag considerably behind civil action from the same regulatory-body investigation (sometimes with indictments issued after the civil complaint is settled or otherwise resolved.)