Removing the Status bar is such a no no no from a UX perspective IMO. I recall Rdio did this for some period and their app reviews went into the toilet. Undoing the misstep set them back on track.
Sorry is an emotion and this is a business. I don't care about how Snapchat "feels," I care about what they've done to fix the security issues and how successful that effort is.
It's not a dickhead move to send a C&D since they didn't bother to ask you if they could rip you off. It's not like it was 'inspired' by. They took it.
https://canvas.facebook.com/
(`_´)ゞ