That's a beauty of a strawman, but I fail to see how the man-on-boy fellatio or the banana slicing are critical to establishing the realities of time and place. It seems more like gratuitous "spicing up" of the prose to keep the reader's attention. At that level, the kinds of "spicing up" selected by the author are highly relevant in judging his character and what's going on in his (sick) mind.
touche.