Movies are not reality nor are they there for the purpose of morality. They are entertainment.
On your first point, I agree, especially when the title is "Pulp Fiction." Careful fiction writers do, however, try to tie up loose ends and avoid inconsistencies where possible. This helps in the so called willful suspension of disbelief, that feeling of losing yourself in a book or film.
On your second point, respectfully I must disagree. All too often, Hollywood interjects political messages into films, where they have no purpose in the plot other than to accomplish social instruction.
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