Also note, death, we are told, entered when Adam fell. Obviously this did not happen in the evolutionist view of things, where things were dying by the billions long before Adam came into being.
Thus, evolutionary thought lifts the curse! And without a curse, who needs a Savior?
That's probably the point.
As well as those who have the viewpoint that man is basically good, or that other religions provide another way to God through works, etc. All have the logical result that Jesus wasn't necessary.