Wifey and I read COC during the exit process. We had major doubts, tied to the lack of love we saw, but no concrete evidence to support our speculation that we had been entombed in a cult-culture for many decades. I did not gain the full impact from what Ray said even then. I later read it again.
I mean, yes it was powerful, but my mind was still 'under the infuence' to some extent. On the second reading, having become convinced of the hoax called Jw's, the impact was full. By then I was able to look at what he said with a greater measure of objectivity....
I think some witnesses could actually read it and dismiss it as hokey due to the witness mindset. But if a seed of doubt is there, it will be nourished for sure.
Jeff