Yeah, and for awhile before that they went from awesome to awful. That was the problem. The "story" that makes the rounds is that WDW changed suppliers for their Beaver Tails, at least partially because the Tails were cheaper, and because the vendor had a different prep method that was less complicated and also less expensive (there were also reports that the original vendor wasn't extremely reliable on supply). They were also less tasty (a LOT less). Sales dropped off because they were not nearly as good...and eventually they just shuttered the place. I think it, as has been reported, gets opened to sell beer during very busy times at Epcot and during F&W.
People have, on and off, contacted WDW about the Tails and the get a stock answer about not being able to find a "reliable supply" of them.