They have started hovering on new emergent cryptocurrencies and don't stay with them long. In dark web transactions, particularly in human trafficking realms, I have noticed the currency is constantly different every few months. A cartel, for example, will set up a random currency, inflate the price while using it, increasing their own holdings value, then abandon it before anyone can be traced or arrested. Then, the currency gets given to normies, who seem to love to tie their names to their wallets.