Well, even if its for publicity, this publicity stunt of theirs will only HELP the girls and will not do any harm to them.
Rest, none of us know what they actually feel and so it would be not good to judge them.
Since I love them, I will appreciate them and their cause. The smile on the kids' face was real for me and the way Gurmeet hugged the kids, that was also REAL for me. And I loved that moment. And if Gurbina could bring a small happiness in their lives, for me its appreciable and those who genuinely help such cause, only they have the right to critize him.
And if their publicity could bring even a few people forward to help these girls, well the purpose is served then.