WDW History nut
It’s not really a dead end. Just an extended path to Splash / Thunder / TSI.Good point... even Disneyland, with its limited space, will have that back-of-park route available... kind of crazy that the MK still has that Frontierland dead-end. Unless you board the train, I guess...
It would be a dead end if you wanted to get to Fantasyland by walking clockwise around the river.