Which you totally misunderstand. This is the equivalent of saying a gun is neutral from the factory. That it can be used in self defense or in the commission of a crime is the very reason we can't blame the gun manufacturer for how its used after it leaves the factory.
Paul was actually ridiculing the idea that God made people to sin when he ridiculed anyone who would ask God "why have you made me this way!?" Shall the one that it is formed ask its maker, 'Why have you made me this way?'
God didn't make people to sin. God made them, as explicitly told to Pharaoh, 'that they might see my power in you.' By claiming that God makes people to sin, you're concluding that God's display of power to the rest of the world is through sin, not obedience. Of course you've got it all backwards because Calvin had it backwards. And rather than use your own brain and logic to see the absurdity of such a doctrine, you just make yourself look sillier and sillier in the defense of slander against God.