First Bible verse in and this is just very bad Tanner, you are better than this.

Isn't that Psalm talking about Babylon? Jews are in captivity in Babylon and the Psalmist is expressing his bitterness towards the captors. Bear in mind that he would probably have seen the Babylonians do that to Jewish kids!

Why does absolutely no one in the world except you read that Psalm and go "you know what God wants me to do to my kid?"

Fine you acknowledge the context is off but you frame it as a "Bible advice".

Do better man!