I am not sure but I think bitcoin isn't involved in more than 5% of criminal activities. But haters always have been highlighting those crimes happening via Bitcoin payments. Lots of crime happening via fiat payment, some of them are caught and some of them still anonymous. We have seen lately a few criminals caught where involved bitcoin-like KuCoin hacks. But as we know, the main problem they have been getting clean coins from the mixer. Even bitcoin is traceable, but we are hopeless when they mixed coins. Criminals wouldn't be revealed unless regulate mixer, which is unlikely to happen. Criminals just getting advantage of bitcoin decentralization.