Blockchain isn't helping criminals, it's more of criminals abusing and taking advantage of blockchain's anonymity. Hackers and thieves existed since forever.
I agree. Cyber-criminals really love using Bitcoin because of its anonymity. They find it very easy to use because the only information that can be identified are Bitcoin addresses and not names. And all a criminal has to do is get a new address for every crime they commit. Its also very easy to mask a computers IP address, thus making it nearly impossible to be traced.