I dont know how this is a big thing, yes crypto currencies are used for bad things as well as for good things. It is the same with FIAT, FIAT is used way more for laundering and bad things. Yu dont see news articles stating '' FIAT was used for such and such crime'' but for crypto it is suddenly big news, besides crypto is easier to trace so it is even better that criminals use crypto over fiat, they can be found more easily.
Just some media trying to demonize thing that goes against their interests. fiat actually far surpasses crypto currency if compared to crypto in the use for illegal activities. You see everywhere it's the paper money that got used for transaction like drugs, etc that appears in some news. if crypto being used for criminal activities it's definitely not the currency's mistake but the people themselves. whenever there's some hole people always gonna exploit.