This guy used to be a famous Protestant apologist— I (a Catholic) had heard of him.
His logic seems unhinged. If one must be baptized or believe in God to be saved, how does he think babies get to go to Heaven? Do people get to go to Heaven if they die before a certain age and then they have to be saved, or how does it work?
Scripture says that a) one must confess that Jesus is the son of God, and place ones life in his hands; 2) for the non-Christian, one must follow the laws/rules of ones own religion; c) one must be free of sin.
For c, the question is at what point one can make a willful choice to disobey God's laws. Only God knows when one becomes responsible for ones own decisions, but I don't think the unborn are capable.
The above is only my opinion, based on my own study.