I agree the notion that some people were abused while others weren't. It isn't an absolute thing that happens to everyone who goes there, but it does/did happen to some. Also, the term "abuse" can be subjective, and it's important to remember that.
I was at CCM a long time ago now, as a 16 year old in 1994. I didn't suffer any significant personal physical abuse, but I did witness it. By my definition of physical abuse, some of the things that happened in my room and/or group would surely be considered abuse, and even crimes in the outside world.
As for emotional abuse, that happened too. But again, what's "therapy," and what's "abusive" can be very subjective and I don't dare presume that what I consider to be mentally or emotionally abusive would necessarily be viewed in exactly the same light by all other people.
So that's just my two cents.