why would you not only not recommend it to non-survivors (which i can understand) but to most survivors?
although i haven't suffered incestuous abuse, i have experienced extrafamilial child abuse. i haven't even gone through the self-blame (i was also going to say self-hatred as well, but thinking, i realized i have gone through it) he goes through, or all the confusion over his physical reaction (ie, erection).
i don't believe it's a very fine line to walk, because one's previous mindset will affect how one reacts to the story. for example, some "pedophile" (the euphemisms are grand; i hate the word because it literally means "lover of children") could probably find some cockamamie way to justify his abusing/exploiting kids in this story, ie, the boy experiencing an erection. but someone who knew that erection, for example is a physiological response that can be independent of sexual desire, or even caused by fear, will know that the man justifying raping the boy because of his erection is b.s. (also, on who thinks "pedophilia" is wrong on principle, ie kids can't give INFORMED consent, will recognize that the conflicts the boy is feeling do not justify what is being done to him.