I would argue that, as one writer put it, he put those words in that order for a reason.
Certainly there is not always layers of considered meaning in every word and phrase, but every word and phrase does evoke something, intended or not.
Even if the writer didn't mean to evoke images of Adam and Eve, or autumn, or, Newtonian physics, in the choice of an apple, if it touches readers in those ways, that's what separates 'writing' as an art form from, say, the machine-translations of a Korean instruction manual.
I think discussing and considering and exploring the evocations associated with that choice of eating an apple has value. Even if you happen to be right, and the author randomly picked the first fruit he saw.
The choice of a single word makes me think of Cor van den Heuvel's haiku "Tundra" consisting of the single word "tundra" on a blank page. Who knows how he first encountered the word, how mundane the context, but put it apparently said a lot to him, and he decided he could say a lot with it.