upon finishing the text, i think my takeaway is that it should be viewed solely as an attempted historical reconstruction. the politics presented are meant to document those that existed amongst the migrant workers, and amongst the people the migrant workers met. if i was reading the text looking for some deep insight into the political forces that caused the migrants' struggle, it is because i fundamentally misunderstood the mandate of the text. if they themselves did not understand the causes of their struggles, how could the author demonstrate those causes and still narrate their story fairly, without mocking them?
in fact, there's some evidence of mocking. the fruit seems to make them sick, and they seem not to understand that the probable cause is that it's been sprayed. did that "medicine" kill grandpa? there's actually a lot of examples of this, but the narrative seems to be left choppy on purpose, to prevent intruding into their story.
if steinbeck were to delve into a deeper understanding of causes, he would have intellectually segregated himself from his characters, and literally lost the plot.
this may have been a part of the reason that the reverend was left underdeveloped. it seems clear that steinbeck wanted to use the reverend as a sounding board, but he was shut down early in the text. steinbeck scolds himself by pointing out how quiet the reverend has been, whenever he's reintroduced. then he takes him out of the story at a point where he could have been louder, only to reintroduce him in order to kill him off completely. but, see, there's a point where john says that he expects to see the reverend again - once again indicating that steinbeck intended to use this character to speak.
was the reverend silenced so as to not interfere with the story of the migrants? and, if so, is there an unedited version with deeper dialogue?
i would post the essay here, but he wants it done by hand. he says we'll spend enough time typing when we're older, and that we're still young enough that we should be practicing handwriting.