The article says that the wallet might not be in their control. They believe it might be a part of a coin tumbling/washing operation. I think the main reason t

The article says that the wallet might not be in their control. They believe it might be a part of a coin tumbling/washing operation. I think the main reason they don't use one they control is the potential to trace where the original funds come from. There might be things you can do to obfuscate things, like tumbling the coins. It's all a risk though.