Except that the LORD personally proclaims this in Jeremiah 1:5. This is Jewish doctrine, which was then inherited into Christianity.
It is sad, really, the author and poster make good points, but by contradicting an irrefutable Jewish and Christian law regarding murder, he elevates the legitimacy of the other myths that he tries to debunk.
You are incorrect.
Few Christians believe in the pre-existence of human souls.
You have every right to believe this is (or should be) Christian doctrine, if you wish, but the vast majority of Christians disagree.
The Scripture you quote can be at least as appropriately read as referring to God’s foreknowledge.
He should get together with expert Nazi Pelosi and the Pope on that.