"Quite a few on this site, and other sites, say that believing in evolution will send one straight to hell."
I once had a friendly debate with a "fundamentalist" Christian who took the creation account in Genesis literally. However, he acknowledged that "it was not a salvation issue." Certainly, Jesus never made a big issue out of it.
Whatever is meant by Jesus not making a 'big issue' out of taking the Bible literally is actually a very big and foundational issue. Can a house continue to stand against life's storms if the foundation is removed or weakened?
Jesus affirmed much of the Bible through both his words and actions. Plus don't forget that 'everything contained therein is given by God and recorded by man with the intervention of God's Holy Spirit - Sola Scriptura!!!