I'm skeptical about innate shifts in sexual orientation being caused by porn consumption, can you cite any research about it?

After all, I've developed a few kinks over the years, but I've never had the experience of not being able to obtain orgasm otherwise. And I'm especially skeptical of the claim that someone who's "half-pedophile" would be unable to get off on adults otherwise. I don't think that's been documented with shotacon or lolicon.

If someone who's bisexual masturbates to too much female porn do they lose their attraction to men?

You could also make synthetic child pornography "prescription-only" as a part of a treatment plan.

And all these concerns have to be weighed against perpetuating the sexual exploitation of children. People seem willing to forfeit their privacy for such a worthy cause, maybe this isn't so far off.