It's hard to prove psychological torment.
Very true. But it is not as hard to prove physical abuse, sexual abuse, or kidnapping. Especially with witnesses.
Also, someone may very well have a story with AARC that doesn't involve having been physically or sexually abused, and someone who was never restrained, or maybe they were only there for a couple of days so didn't even see any of that. Regardless, someone with that sort of an experience knows that children are there against their will and that unlawful tactics are used to keep them in there. They can give a statement to the police, and it may not be enough for the police to take any form of immediate action. It will however, be another person coming forward who is stating on the record what they are aware of, and the next time that the police get called because a neighbor witnesses a group of newcomers and an oldcomer sitting on someone in the front yard, and when arriving the victim begs the police to save them from AARC (just an example of a typical situation) they will think twice before abandoning the victim.
The fund raising for AARC from the R.C.M.P. scared victims away from reporting their abuse. Graduates need to know now that there is nothing to be afraid of. AARC programs you into thinking that everyone sees you as a lying manipulator, and that nobody will believe you when you tell them what happened to you. If the worse scenario is true and a police officer thinks you are making it all up, so what? Then they'll file it and do nothing with it, and maybe it will sit there forever unnoticed, or maybe someone else will pick it up and look into it. You don't loose anything in the process.
