Ginsburg is an obscenity case which is an exception to First Amendment rights. Even though the material wasn’t obscene vis a vis adults The court found that “The State has power to adjust the definition of obscenity as applied to minors”,
Outside of obscenity the regulation is impermissible See, Video Software Dealers Ass’n v. Maleng*, 325 F. Supp. 2d 1180, 1185–86 (W.D. Wash. 2004) noting that “the decision in Ginsberg is based on the fact that sexually-explicit material is not entitled to the protections of the First Amendment. The statute at issue in Ginsberg did not create an entirely new category of unprotected speech: rather, it adjusted the Roth definition of obscene material to capture that which is of sexual interest to minors.”