I do not know that bitcoin is dangerous because the real danger is the scamer they have nothing else to do is to scams and the worst to you if you scam you will be banned and all of your effort will be unusefull because of it.
it can be suppressed if the state has implemented clear rules with competent support, the crime rate will be reduced if the state wants a smarter step in overseeing losses, it is just a matter of ready or not ready while they understand that bitcoin has potential. if there is good education from the state, then many users can be wiser in any activity that is vulnerable to hacking and fraud.