I know at least two people who greatly benefited from therapy regarding unwanted same-sex attractions. They would not call it "conversion therapy" but a way to understand the root cause of their attractions. That process was freeing for them. All clients and practitioners should be able to choose how to counsel on this complicated issue.
Moreover, licensed medical professionals with years of education and experience should not be removed from the process of helping children or adults work through their physical, mental and emotional struggles.