Nah! Far from it. It's just giving a dog a bad name so as to hang it. The real reason behind the skepticism in accepting Bitcoin doesn't line in criminals using it for illegal stuff, nah! The reason isn't farfetched. It's because Bitcoin as a decentralized asset doesn't give the government access to controlling the finance of citizens and other fiscal policy of governance which fiat allows the government. With Bitcoin and its limited supply, it would be very difficult to regulate government's monetary policies.