I don't understand how anyone reading Genesis would take it as a metaphor. I'm sure God knew evolution would be a big deal and that is why it specifically says "God created" so many times. But then both evolution and creation are accepted by faith I suppose. My faith is in the Bible. And I don't know why God couldn't stop the earth from rotating or anything else He wanted to do. I have a hard time picking and choosing my miracles. Either the Bible is true or it isn't.
I have to agree that logically it's hard to justify considering part of the Bible metaphorical and part as narrative.
OT, something that's always puzzled me is that if there were a God He'd know exactly how people would misinterpret an earth full of fossils and the way DNA is shared by all earthly creatures. So why create the impression of evolution? It would have been a lot more straightforward to remove misleading evidence than to simply say "God created" a lot of times in a book that most human beings who ever lived never read.