Underfire, I think if you look you'll see what we call "intake strakes" (also known as 'Engine Ears'
) on most aircraft with big fan engines hanging under the wings. While less than desirable, they are a solution to a very messy problem. With an engine not running during final approach to landing, all that air spilling out of the inlet separates and messes up the airflow over a fair part of the wing (and during an engine out approach, loosing a bunch of lift is rather undesirable), That strake reenergizes that spillage out of the inlet and prevents it from separating the airflow over the wing.
BTW, to the original question, I suspect the aero engineers developed a more elegant fix for the aft fuselage separation problem than the vortex generators...