You should re-read the full version in the Bible. If you curse at your parents you are put to Death and like a hundred other laws you literally can't do anything and it can happen by accident and you are now dead. You need to discern what God is doing. Right after Moses came down with the 10 commandments the Israelites were worshipping a Golden Calf and God was on the brink of killing the Israelites right there and then until Moses brought up the covenant that God made with Abraham, Jacob, Isaac.
Exactly. We know God is Wrathful, He admitted to being a Jealous God (worshipping other gods), and He chose Moses for the mission even though he murdered someone and wasn't circumcized. Read the rest of the Commandments and you will understand how God is trolling the Israelites after not being thankful for saving them.