Of course it does, everything in this world can be use in any illegal activities, even FIAT money used to illegal activities, how much more cryptocurrencies that is use in a virtual world and you are transacting to a person that you can't even see or touch that can make himself/herself fully anonymous in the internet, that is more far dangerous though.
yes i am agree with you there is no doubt this that bitcoin can be use for illegal activities and there is also no doubt about this that all other fiat currencies may also be used for illegal activities, but there is no fault of bitcoin as most of the people still using it for good and legal activities.