We certainly don't know what drives sexual attraction in our brains. But we do know that it is darned hard to change. People can't choose to be straight vs gay. Gay people remain gay people even when they hate themselves for it, and even in places where they face the death penalty for it. (True, bisexual people do wind up choosing to only act on heterosexual interest in such places. But again the wiring does not get affected by society's approval.)
There have been decades of research into pornography and sexual violence. As https://www.utsa.edu/today/2020/08/story/pornography-sex-cri... says, the overall conclusion is that pornography does not increase sexual violence.
So to this topic. I no more believe that people have a choice about being pedophiles than I believe that people have a choice about being gay. The significant difference is that gay people can be consensually gay with other gay people. Pedophiles cannot consensually abuse children.
Disclaimer. This is a personal topic. I was homosexually abused as a child. I deeply understand the importance of the topic. Which is why I care that people think clearly about it.
Because I value clarity of thought, I consider arguments about encouraging moral decay, or encouraging pedophilia to be complete and utter bullshit. Arguments should be rooted in reality. Those arguments just use revulsion to shy away from the painful truth.
Here is the painful truth. Some fraction of (overwhelmingly) men have a strong sexual interest in children that they struggle with acting on. Nobody really knows what makes someone have that interest. It almost certainly is an orientation that is fixed before puberty. We know of no way to change it. Therefore we have the same four rational choices that we do with every other such "unnatural sexual desire".
1. Kill those men. 2. Lock those men away permanently. 3. Accept that they are among us, protect ourselves in some ways, and only punish those who prove unable to resist their impulses. 4. Make what those men want as normal.
While many of us would be OK with the first two options, as a society we've chosen the third. With gays, opinion has swung over my lifetime towards taking the fourth option with gays. (I'm for it, but this is definitely a change.)
Given that we're choosing the third option as a society, this jailing makes no sense to me. The guy found a harmless outlet for his perverse desires. Yay him? Don't let him work in childcare, but let's save jail for, I don't know, someone who actually ACTS on his desires?