I think the dividing issue between the two leading flat earthers is mainly concerned with the best way to cook and serve the Nazi genetically created Antartic penguins, that incedentally forms the main part of the diet of the secret Antartic protection strike force.
From what I know Davis favours his slow roasted, while Bishop, being more of a traditionalist and part time survivalist prefers his raw.
I think that about sums up the schism.