It would be because hackers and scammers need to store their money safe from their governments so bitcoin will be a good option for them. If i was a scammer i would drop all my stolen money in bitcoin. So by doing this I am nearly untraceable for the government to arrest me. So in short i will be safe doing this.
That would only be possible if you will not cash out your money, the government has the power to monitor exchanges and require them to submit
necessary reports to detect illegal activities which is done by money launderers.