I have always argued that any one person, telling the kinds of stories we're all so familiar with about any program, facility or school would lack credibility. After all, the accounts of what takes place are incredible. This is why it is so easy for the program staff to get the parents accepting it is all lying manipulation. What makes the accounts credible are the multiple, consistent, persistent accounts of these incredible things.
When you have someone telling a story that deviates significantly from what is consistently expressed there may be some reason to have doubts. There are a couple of occasions where I have thought some embellishment has taken place, simply b/c no one else ever made a similar claim. But for the most part, given time, you'll find multiple witnesses to even the most hard to believe accounts.
When you have persons from many various facilities, scattered across the world, describing the same kinds of abuses, neglect and deprivation you have to accept the allegations are credible. If you don't, it is simply b/c it pays you not to - and I hope this "blindness" will end up costing you. . .