So fantastic that the amount of time and energy this girl and her peers dedicate to its use is well directed? And here I'd thought it only enables one to send photographs to one's friends, with a scoring system to encourage the development of addictive behavior.
You could say the same of nearly any fad that resonates with teenagers. My point was plenty of people I know, across various ages, use Snapchat as a replacement for MMS. I would hardly classify that as an obvious misdirection of human attention.