User blog comment:Damac1214/Black Ops 2 Uprising DLC Trailer Released + Double XP on April 12th to April 15th/@comment-402843-20130405121545/@comment-142.165.187.100-20130405172550

They never said the were safe, they said they were a quick way to get around the map but left you exposed, although I doubt keeping the stage in Encore would be a good idea either.