It's simple, when they pull the plug, this will be one of the most catastrophic and devestating Ponzi schemes the world has ever seen
Bitconnect will not destroy cryptocurrencies but it has already destroyed itself. Many people like myself avoided this project in the beginning. Those affected were lured into this ponzi scheme with hopes of getting rich and now they have been burned badly. Hopefully they can recover from this disaster but it'll be hard if they fell for it hard and went in 100%.