Firstly, I just love that this conversation is continuing because this particular app raises such sticky issues. IMO you've hit the nail on the head here in demonstrating that Snapchat is simply using technology and creative equity for their own profits without really contributing anything to help support and regenerate this creative energy their profits depend on. This seems to be usual story and I like so much that @sndbox is dedicated to specifically challenging and creating alternatives to this paradigm.
And such a great idea to contribute towards public parks and IRL public art initiatives.....perfect.