Because there is a strong difference between PROMISE, which is illegal and STRONG optimistic prediction which carries a risk of not happening and the user is aware of that. The problem with people is that they want to go rich fast so hard that they might intentionally mix optimistic personal prediction to a promise and later become angry "victim". Their problem.
When any leader implies his optimism, they are clearly stating that success of the company and onecoin cryptocurrency depends on the network and people. If we have enough users and merchants we can succeed. Otherwise, it will be hard. I personally think we are on good tracks.