One thing is sure the silk road opened the doors to the media to attack bitcoin,after that they didnt stop,but what is happening is more people and more investments at bitcoin soo sure its being used for good things as to bad things,in the end bitcoin is growing in numbers and value.
Well what the media did was a good advertisement for bitcoin if it wasnt for that news people wouldnt be aware of bitcoin.
Bad or good advertisement it still help bitcoin to be known by the people.