It all matters. The problem is that people are expecting the bible to be a science textbook. It isn’t.
The Bible is history, written at the direction of the Holy Spirit. It isn’t a (human) science book because having people know and understand His creation wasn’t and isn’t God’s purpose for it, like it wasn’t and isn’t the purpose for our existence either. It does speak to human science, though. God is over nature, not the other way around. As such, “the evidence” around us of what’s happened in the past going back to Creation may or may not accurately suggest what actually happened, and that’s according to science, which also has its limitations and distortions.