I strongly disagree with this. If I were donating a large sum to a non-profit that helps poor children, I would absolutely earmark it with a stipulation that it must be used to help poor children who grew up as I did (poor, no opportunities for other aid/scholarships because, well we all know why).
In any nonprofit or mentorship situation, I always make sure to reach the children who grew up like me because they truly have no means of assistance.