I agree.
They are mockeries of the real story -- that is, His story.
Shem lived right up to the time of Jacob, and I once made up this story to show how Shem could have set the record straight every time some civilization came up with their bogus version.
Re: The Epic of Gilgamesh
Shem: What's this trash you wrote, Nimrod; are you okay!?
Nimrod: Don't start on me again, uncle; you've always looked down on us Hamites.
Shem: That's garbage too! You used to be a mighty hunter before the LORD, what went wrong?
Nimrod: You think you Shemites are so much better than us, just because my grandfather was cursed for what his father did to your mother in that tent that day.
Shem: I watched you grow up, Nimrod, and how you used to love the LORD so much; but somewhere along the line you went astray and broke away from the rest of us and went and formed your own little empire. Well ... you do what you want, but as long as I live, I'll make sure my eyewitness testimony trumps your lies.
Nimrod: And what makes you an authority on the Flood over me?
Shem: I was there! Remember??? I was on the Ark ... you weren't!
Nimrod: Oh, that's right ... somehow I forgot ... what with there being no evidence and all.
Shem: [facepalms]