I remember a prior discussion being a long time ago, but upon searching I find it was much more recent that I thought.
About General Questions [complaint about a warning] from January 21-22 of this year.
Okay, @Colibri’s remarks there are generally consistent with his remarks here, but I didn’t find it totally clear then either, that threads devolving into debates were forbidden once we got many posts down into the thread.
Still, with a lively debate going about Sioux and Rushmore in that thread, and any factual question answered as much as it was going to be, why not just move the thread to IMHO or GD and let it continue?