Nietzche??? Nietzche??? Good grief, will it be Kafka next?
No fair, it's been near a half century since I read Nietzche! LOL
But yeah, as I bemember it, that's about what he said.
I would certainly disagree (and IIRC did disagree) with that based on a couple things. First, Noah & Company only get saved through science. They get a commission, a few rough directions and over night create a ship building industry that turns out to be the salvation of mankind.
If the problem was folk gaining knowledge, if this were an anti-science ploy, then why use science as the Deux Ex Machina to get the hero out of trouble? Why not reuse the old plot from a couple episodes ago and place an angel with a fiery sword that wards off the waters and keeps Noah & Company safe? After all, the miracle gambit was so good that only a few episodes later in the saga they used it again to part the waters.
How does the old song go?
If it was good enough for Moses, it's good enough for me.
I do believe though that it is a message or morality play, in fact a classic one. It has all of the characteristics, hero standing tall against all odds overcomes impossibly difficult circumstances and triumphs while the evil town's people suffer.
It is, like all such tales, simplified and exagerated for clarity and emphasis. Everything is magnified. The flood is not just a flood, it's a world-wide flood. Not just the evil town's people suffer, everyone not on the preferred list gets killed. Not just the people die, all the animals die.
The message is that if you trust this here GOD he will take care of you.
There's also the likelyhood that some real event of events, ones that would be familar to the audience, served as the basis for the story, but that is certainly not necessary. In either case, just like other such tales, it was told to instill confidence in a group that they would be taken care of.