The official FAQ lists most of the core beliefs of this society as a whole, and is considerably more plausible than levee's.
That's your opinion. So far I see a lot of discrepancies in the "official" FAQ, as shown by the variety of complaints this site recieves, but non in levees. We can only assume therefore that levees is the more acceptable version.
Well, of course no one has been debating about levee's FAQ, as it's not an official part of FET, and it's in the believers' section as a strictly alternate theory. Most new people never go to a forum where they can't post anything, and even if they did, they'd just be told that levee's beliefs are his and do not reflect the beliefs of the society as a whole.
Also, I should point out that your claim of "no discrepancies" with levee's FAQ isn't entirely accurate, as levee used to debate with his model in the discussion forums, and posted his FAQ there originally. This caused a firestorm of controversy, not only with new members who took one look at it and thought we were insane, but also senior members who often advocate for FET.
Also, I don't know how you can say the elephants were put in as a joke. Did you write the FAQ yourself?
The FAQ was written years ago as a collaboration by a few mods and admins. None of them are active now, but one of them confirmed that the elephants comment was indeed a joke. Also, the FAQ has been edited over the years by other mods and FE'ers, so it shouldn't really be credited to the original writers so much as the entire society. Naturally, not a single one of the currently active FE'ers believes in that as well (not even levee).