If the goal of this is to improve the mistreatment of women and not a thinly veiled attempt to enforce one's morals on others, then it is categorically "bad." Let's look at this another way. Say you're a sex slave who was just beat up by your pimp. Would you go to the police and admit to a decade of prostitution? Sure it may reduce the amount of prostitution going on, but for those who are in the "industry" this only makes things worse for them. All the power is now back in the hands of the pimps and gangs again.