i disagree, bitcoin based on utility and viability for replacing existing systems and with global markets being massively inflated with magnitudes of dept spiraling(1Tril 2001 >250Tril 2018 US alone) is greatly undervalued and as soon as the banks fraud is truly realized all cryptos will gain as they replace the old systems and bitcoin can implement anything from other cryptos that works as most are based on it and its code is open source
the most used currency in the world for those king of nefarious things is FIAT mainly USD Gold and weapons are close after, you cant track any of those bitcoin is transparent and can be traced