https://www.deepdotweb.com/2016/01/23/bitcoin-playing-an-increased-role-in-crime-europol-says/Would you believe that the existence of bitcoin has increased the number of criminality in some countries in the world. This is the issue that was being thrown by the EuroPol and the UK Metropolitan Police. According to them bitcoin has played a huge role on the increasing criminality in their area. They added that a huge number of cybercriminals were using bitcoins in their activities.
This just shows that as bitcoin develops both advantages and disadvantages will tag along.
What you have stated above has a point. Although criminality is widespread even before the development of bitcoin, it is true that the existence of it increases the misdeed of people. As a matter of fact, some media flashes a news about bitcoin as a scam. It is maybe also use as a tool to do or done some cybercrimes like hacking someone's account or money.