It may be more of a normative action in their Gothard cult for a 15 year old to confess.
But I’m not sure if the confession at 15 was from Josh or the if it was the 5 year old that told on him. The police report doesn’t have pronouns and Jim Bob has lied about so much there is just no way of knowing if Josh confessed.
I answered your question and presumed you would answer mine, which was very simple and precise. I was wrong. I will learn to not waste my time in the future.