There's not too many who will discuss the science here. It is usually about scripture and dogma.
So you might have to take what you can get.
With that I agree: concentrate on what you see and can test for yourself, and don't bother with what someone is supposed to have said, somewhere, some time, without us being able to verify all the links between them and us.
Still, even that does not seem to be enough for most (if not all) flat earth "believers". I'm at a loss what else they could possible want. It has become like a cult, where there's only one dogma: "the earth is flat".