The point is that at a technical level, SnapChat imposes no barriers to an actor like NSA. It's not even designed to. So it's already far from "untraceable" and

The point is that at a technical level, SnapChat imposes no barriers to an actor like NSA. It's not even designed to. So it's already far from "untraceable" and it's gratuitous to suggest that the government will kill the service or even need to change anything in order to see what you are sending on SnapChat when they want to.