“Genesis is not written symbolically, nor as parable, nor poetry, etc.”
Indeed, the Bible usually very clearly delineates those sections. When Jesus tells a parable, the Bible says something like “and then Jesus told them the parable of ...”, or a postscript is attached explaining that the story was a parable. When the prophets see a vision, they wrote down stuff like “and then the Angel of the Lord showed me a vision of ...”. So we are not left to wonder what parts of the Bible are symbolic or allegorical, although that is what the Biblical fantasists would like.
Exactly right.