Genesis 1:2 says this earth was flooded first. Long, long before Genesis 6. Nothing in the Genesis account describes the creation of each and every individual ‘soul/spirit intellect’. Yet we know the ‘soul/spirit intellect’ existed, as it was the ‘breath of life’ that God breathed into Adam’s nostrils that made him living. ‘Breath of life’ means soul. And it is that ‘breath of life’ (soul/spirit intellect) that returns to the Maker that sent it.
I see you are a student of the word AND the manuscripts!
This Morris guy, who also wrote the "Defenders Bible", thinks Noah took dinosaurs aboard the ark. Not big ones he says, but "little baby dinosaurs.":) That is how little known that there was a first earth age and how people make foolish statements (sottish) by not recognizing that fact.