"Exodus 35:2 "Those that work the Sabbath should be put to death."
Why isn't that happening? "God"....friggin stupid humans and their stories."
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You know the Bible good enough to refer to a book, chapter and verse....and quote it. Good for you. That's a start.
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The "rest of the story" tells us why (1) you are confused (2) you don't understand.
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Hosea 7:9 "I desire mercy and not sacrifice, and the knowledge of God more than burnt offerings." Burnt offerings and sacrifices were never, ever meant to "replace" knowledge of God and mercy. Thus your quote of Exodus 35:2 shows you have "some knowledge" but "little mercy." 
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The entire New Testament is a testament that the "laws of punishment" has been replaced - replaced - by the "grace of God." It's the continuation of that Hosea 7:9 idea.....that God is far more interested in "getting people back to Him" than in simply punishing "sinners" with death.
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You sound like Jonah who actually got made when God showed mercy.