It's unlikely that they will seriously tolerate flat earth.
It strikes me as the tactic of assume and destroy. But poorly implemented, because flat earth is the truth.
Sungenis is deeply intolerant of it. He is quite naive about the internet too and its nature.
His popularity is sinking. Few people now who become geocentrist nowadays stay that way for long. They make a choice either way.
You're probably right. The only post on the forum that I saw is about a view of Mt. Rainier in the fog, but in giving it a quick glance, it didn't seem address geocentrism; rather it seemed to address the idea that the earth is a globe and not flat. Geocentrists seem more intent on disproving FE, rather than proving their own cause of geocentism. I was expecting to see something about geocentrism.
But yes, I expect that he only wants to draw FE'ers in. I might not be the best person to post there, since I'm still somewhat new to FE, but oh well.