 Adding the thesis of divine foreknowledge as a premise would let us complete the argument, but this initial stage is what matters here. The conclusion looks false. After all, God’s foreknowledge didn’t cause Kurt to act as he does. God merely saw ahead of time that Kurt would do this on his own, for his own reasons. By analogy, my covertly observing Kurt as he steals John’s lunch does not affect his responsibility for the theft. Why then should God’s being aware of that same act (albeit ahead of time) make any difference to whether he should be blamed?