As the origins of paraphilias (including pedophilia) is fundamentally different than the origin of sexual orientation, and one is learned while the other appears to be biologically-derived, there is a much higher possibility that a paraphilia can be fundamentally treated (combinations of drugs and CBT are used to varying degrees of success) to manage the attraction, whereas the same is generally not true, nor desirable, for non-heterosexual orientations. Chemical castration is a matter of last resort for those who refuse are unable to manage their sexual impulse control; it's no coincidence that practicing pedophiles that come to the attention of the criminal justice system have mental disorder comorbidities, such as ASPD and ICD.
I'm not arguing that paraphilias can be eliminated by treatment; I'm arguing that they are fundamentally different from sexual orientation because they occur for different, learned reasons, and it is therefore desirable to treat the harmful forms, such as pedophilia, and it cannot be ethically/morally compared to the notion of treating sexual orientation, which is a fundamental matter of biological identity. Comparing non-criminally-active pedophiles to homosexuals, bisexuals, asexuals, transgendered, etc is a false equivalency for many reasons.