Tis an interesting opinion.
Here's what I find interesting concerning my interpretation. I'll post that up again, so, I can show you.
19 And of every living thing of all flesh, two of every sort, shalt thou bring into the ark, to keep them alive with thee; they shall be male and female.
20 Of fowls after their kind, and of cattle after their kind, of every creeping thing of the earth after his kind, two of every sort shall come unto thee, to keep them alive.
21 And take thou unto thee of all food that is eaten, and thou shalt gather it to thee; and it shall be for food for thee, and for them.
You see the first "2 of every sort" shalt thou bring into the ark, is different, then the 2nd "2 of every sort shall come unto thee". And the 2nd mention is after God lists the fowls, and cattle, and creeping things. So the reader, as well as Noah, knows God is speaking of "critters".
Which gives cause to wonder: Just who IS that, Noah is to bring into the ark to keep alive WITH thee? Which is different then the "critters" whom Noah boards on the ark, simply to keep alive?
My belief is, it's the non-adamic "races", God created on the 6th day, in Gen.-1:27. Which is different from the adamic man, or "Adam" God formed from the dust of the ground, on the day after He rested, or the 8th day. Not that this has anything to do with salvation, or, anything, but, tis this same "eth Ha-adam" blood/spirit line from which Jesus Christ would come, and from which the the Holy Priesthood, blood/spirit line would come from Issac's sons, and NOT ishmael's son's.