Whether you believe Earth is five thousand years, a few million years, round, flat as a pancake, center of the universe, or backwater corner, honestly doesn’t make a difference to salvation in the belief in Jesus Christ.
True. However, both sides feel that the other weakens the gospel message. As such, it is worth debating to see which side has God’s approval.
See, 1 Corinthians 11:19
Actually, it does. "Salvation in the belief of Jesus" is based on the fall of man and man's redemption through Christ. If the Creation was some sort of "theistic evolution", then it renders the story of Adam and Eve and the serpent and the Fall as just that-a story. If man evolved (theistically), then it destroys the story that God created two people who sinned and therefore brought death and damnation on the rest of humanity.