It’s interesting — I initially was calling this “rememberable design” which I think is the actual key here. I believe the idea was to make the design the fastest and easiest to use camera to capture a moment and really to use photos as communication. I wouldn’t call the design “unintuitive” necessarily — it is really intuitive and fast to use once you learn it. Opening the app brings up the camera right away and it’s easy to take picture or video and send it onwards. But I do think it was intentional that they optimized for speed of use and how easy it was to remember how to do something than how to learn it in the first place. I think the parents piece was more of an outcome of how and why Snapchat was adopted than anything intentional — though it certainly helped that in the early days it felt like messaging between friends when anything you posted on Facebook was liked by your mom within a minute.