No they're not and I can prove it.
A new study reveals pedophilic men have increased activity in the left anterior insular cortex when viewing images of young animals.
neurosciencenews.com
In this experiment, they did brain scans of normies and pedophiles when looking at photos kittens and cats. The normies had the same brain response when looking at both, but pedophiles had a much higher response when looking at kittens in particular. These are nonsexual images being presented to the test subjects, so they removed the possibility of stirring sexual arousal.
According to this made up "porn sickness" narrative, it should take more and more depraved sexual images to even form the beginnings of a neurological response like this, right? The images aren't even sexual, just generic cat pictures, and the pedophile group in the experiment had a profound response to it.
Pedophiles are just wired differently and are innately different from normal people. It's that simple. I don't know the underlying mechanisms for what sets pedophiles apart from normal people, but my best guess is that it's genetic.