Because DARSH holders make more money by capturing more victims, so they use very aggressive cult-like marketing tactics to sucker people in.
Fortunately this kind of Ponzi scheme is illegal in Arizona, and the process have it stopped has already begun.
The only place where "the process" has started is in your head.
Now back on topic, I don't see the ponzi man. By your logic proof of stakes are ponzies too? Masternodes are basically proof of stake with a minimum amount of network weight, in this case 1000drk.
Yeah it's not a ponzi and he knows it. The only reason he is trying to convince anyone it is is this:
Just letting them know we know 'where the bodies are buried' may be sufficient to convince them to pull a Friedcat (IE take the money and run) and get out of XMR's hair.