Adam and Eve (and also Noah's Flood) can simply be a Parable for mankind falling deeply into the sins of murdering, enslaving, raping, stealing, plus greed and selfishness.
And Jesus came to liberate us and elevate from those evil things.
Humans don't need an allegorical Jesus to do this; morality is proven also to be naturalistic.
What's more, Jesus can be thanked for the crusades, the holocaust, the current suffering of millions needlessly with disease we COULD cure, the spread of aids by preaching against contraception, and more and more.
There is no moral argument to make FT.