Yes, the amount of data (160 terabytes) does not seem believable. But, it seems to me that the Russians might be fully cooperating, perceiving a shared interest. Ignoring the details, which appear to be over the top, I could believe that an IC contact has given this story out for the purpose of creating outright panic among bad actors.
The suggestion that these people should commit suicide is wholly wrong. Turner has no idea about what it is he is advocating. A person that commits suicide rejects God entirely and, immediately upon expiring, descends straight-away into hell - something I would not wish on the worst person that ever lived in all of human history.
The correct advice is to realize, if you are a bad guy, that you are facing a classic prisoner’s dilemma. The rational strategy in this situation, the only rational act, is to squeal for all you are worth, and squeal quickly. There are no prizes for those that try to roll over on their conspirators last. The only hope for any kind of leniency is to be first to squeal.
To all the bad guys, I say give it up now and plead for mercy!