I think the problem here is that some folks simply haven't been introduced to the historical, Ancient Near Eastern background information which, if they learn about it, puts some 'feet' on the problem of interpretive obscurity. There be lots of talk about water; and sometimes mountains do rise out of it. Lots of them.
Honestly, I think that a lot of people don't actually care about...they don't really care about the Bible. Their theological constructions take priority over hermeneutics and text criticism.
As though it's more important to have a firm theology, than it is to actually acknowledge what the Bible is talking about or to think critically about its content.
Like that other guy arguing for a literal Adam and Eve. It doesn't matter that snakes do not talk, that women aren't made of rib bones, that the sky doesn't have windows in it that open and close to release water (gen 7:11 and 8:2).
Anything that even remotely challenges literalist theology must automatically be denied. And every detail must be "true".
Then when you point out parables of Jesus, and stories that are not literal history but are still simultaneously true...
Well that's just subjectively not good enough for them.
And to that I say, well good luck not becoming an atheist. Because anyone who actually studies the Bible will inevitably reach that point. And they'll have to choose.
The Bible tells its own story. Literalist apologists argue for literalism to defend the Bible (and to defend their own beliefs system). Whereas on the other side of the table, we can just sit back and let the text speak for itself. There is nothing to defend, we just merely need to look at it and see it for what it is.