[badlucklottery]

From what I understand, they weren't being charged for created a "dangerous" technology but for actively running a money laundering operation that happened to use that technology. Some of the chat logs that were obtained seem particularly damning.

So it's less like S&W legally selling guns that are later used in crimes and more like a low-level buyer in the Iron Pipeline (https://en.wikipedia.org/wiki/Iron_Pipeline).