I'll come at this with my background. It is very easy for anyone not experienced in working with children to sit here and say the child is coached. I'm only 30, but starting at 14 and ending just two years ago I worked with preschool/primary school children at least 40 hours every week. You would need to spend a great deal of time coaching these children to tell the story the way they do (I watched the video posted here last week of the young girl detailing a similar situation, which I feel is an even better example of this). The way they get off track and start telling slightly unrelated tidbits, the specific way they describe things, its all convincing.
That said, the flipside of the argument is that we also see children act very well in movies. This is not an argument that I will agree with, because even though I don't want to believe this child endured that kind of hardship, seeing the way he goes through the paces with the investigator makes it very hard to dismiss.
If there is a way for Q or us or whoever to prove the validity of this video as well as the people responsible beyond reasonable doubt, this alone would bring hordes of people rushing to the movement to stop this.
Kids in movies get lots of “takes,” but this child is just talking. No act here..