These delusional people are the ones who need to be regulated as making sex a moral issue has indeed led to horrors that would have otherwise been avoided. I wouldn't even say they have good intentions in this case as it's obvious what happens when sex is made into a moral issue. We have the evidence and we know. We also know what happens when it's not and people are allowed to have sex with whomever they want for whatever they want. To still want to control who people have sex with and under what terms after knowing all this is to intentionally support all the negatives of having sex be a moral issue and outlawed in most places: human trafficking, slavery, etc.
These people making moral judgements about an amoral topic are the ones providing the foundation for the global sex trade. Shame on them indeed.