Evidence must come from a reliable source: word of mouth from people being paid to keep their mouths shut is not a reliable source.
A sources reliability is in the eyes of the beholder.
Since BiJane is taking a FE position and using their logic, a reliable source is one that agrees with him, anything that does not is unreliable, faked, bollocks, fantasy and simply impossible.
If you reject BiJane's argument on the non-existence of Australia, your reasons for doing so will also apply for rejecting the arguments for a Round earth.
As he is using the same tactics