yar. You said: *Why report 16 year old dancing as “success”? *, whereas this snippet is saying that their presence indicates that the military objectives i.e. the removal of the Taleban have been successful, because its safe for them to return.. whereas before in Taleban’s time girls such as these were found riddled with bullets.
You’re shifting the context of the word success. The article has several sentences that point to the exploitation of the girls, from explicitly mentioning the age (16), to the dead skin on her feet, the expression on her eyes, the description of the clients (fat/overweight/with BO) etc. In no way is the act of dancing itself declared a success.