One may say that the acceptance of homosexuality and prostitution legalized these phenomena. Human action essentially gives freedom to evil. For example, prostitution has existed since ancient times but has never been approved by society. Twentieth century humanism has raised it almost to the status of a worthy profession, and the same with homosexuality. But sin has no right to exist.
Sin is sin.
Secularism usually does not have morality only jurisprudence. Moreover, the acceptance of sin often does not bring any use of jurisprudence. In secular thinking what is not forbidden is allowed. Ascetics even assert that one must struggle against bad thoughts since crime has its origins in thinking. Of course we have to speak about the condition of society as a whole.