Some time back, I read the Jack Chick comic on DnD as a lark. I was so amused by it, I started an email rapport with someone who works on the site. He gave me exactly the same story as you posted. In addition, he actually claimed to have several of the books as reference materials, and they all had detailed magic rituals in them. When asked which books, he declined to answer. When I asked if rpgs would be acceptable if they had a disclaimer, he declined to answer. When I told him he was a bold-faced liar, he stopped writing to me.
This post might not have been what he said, verbatim, but it brought back a lot of memories. About the only thing you missed was specifically mentioning the kid who committed suicide when their character died.