I think you’re missing the point, at least as far as I understand it.
Child predators experienced some kind of trauma, and as a result they never developed. That could be external trauma (abuse) or internal trauma (thoughts, mental illness) but as their body “grew up” and they began developing sexual urges, they never matured.
Think about your first crush. They were your age, probably, unless you had a crush on Jennifer Connelly like every other millennial boy. As you grew up your crushes were probably always within a few years of you. It’s just how it works.
In “minor attracted people” (I hate that term, but it works for criminals AND non-criminals so it’s valid) the attraction just doesn’t get updated.
Humans are REALLY BAD at controlling our impulses. Especially impulses that are taboo. Especially biological impulses (eating, sex, learning, games, etc).
So these people go into fields where they can be around kids. And then an “opportunity” arises and they either can’t fight their criminal impulse or they rationalize their criminal behavior.