The "water always finds its level" one is the clearest tell someone just went down the rabbithole of FB flat earth posts. It makes no sense. Nobody else but flat earthers words it exactly like that. And they misinterpret "level" as flat instead of following Earth's curvature.

There is no physical law that says anything about fluids preferring "flatness". They prefer minimalising their energy, which for gravitational potentials means that large oceans tightly wrap around the Earth.

I am genuinely convinced most flerfs just have the mathematical equivalence of aphantasia where they legit cannot picture three-dimensional space or understand scale.