Flat earth brings out the worst in humanity

Flat Earthers have taken certains things FAR out of context.
Theres only ONE way to explain their conclusions to where it makes sense in a Biblical sense, but that explanation also proves that we live on a globe.
The ONLY way the theory holds water is if they are in fact describing an ecosystem WITHIN our own planet. Hollow Earth theory.
A vast Ecosystem within our own planet, than in fact COULD be rather flat and under a "firmament" sorrounded by an aquifer under the Earths crust, under our planets exterior oceans, under our Heaven/Sky.
This is actually supported by Biblical and historical records.
Imo, they have are lost on the context.
Without this theory, the flat earth idea falls apart completely

Okay... I am creative writing here but what do you think about this.

What if it was flat but round like a quarter with a hole in the middle and a firmament that went completely around it. The hole in the middle (hollow earth?) is what creates the northern lights.

Could this work?