CipherTrace just published their Q2 Cryptocurrency AML Report and found it interesting that Bitcoin still reigns king in dark markets and cybercrime. Most people associate privacy coins even just 4% involve Monero.
Even in the case of malware and ransomware, ETH used in only 1% of instances and BTC used in 98% of cases.
https://ciphertrace.com/q2-2019-cryptocurrency-anti-money-laundering-report/One thing can have both good and bad aspects. But it does not make an impact. Smugglers may be using technology. But the government of a country can control them if they want.