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
There is nothing to them that has the power to affect the whole system, really? There are so many out there that have not even heard of them. Just because you take notice of a site or service and decide to not trust them is between you and them and there is no reason for the rest of the crypto world to notice. There are so many of these things out there that everyone can find one for themselves to not trust, one each, that works.