"You see the same thing that enables the sex worker also enables all of these bad things. "

Yes, that is the nature of useful tools. A gun that can defend a woman from a rapist can also be used to rob a bank. A fire that can prevent you from freezing to death can also burn your house down. And a private currency that allows a sex worker to run her business unmolested, will also allow a ransomware thief to spend their stolen goods.

The fact that they can be used for ill purposes doesn't mean we should refuse to use guns, fire, and private currencies though.