No. If you look at snapchat as one of the most addicting games on the market right now, hidden features make complete sense. They increase the 'skill ceiling' of sorts, and dramatically increase user longevity.
I don't think so. It's simple for a firs time user, but has near limitless depth for hardcore users.
Non-snapchat user here. I find this hard to believe.
Occasional Snapchat user here. "Near limitless depth" is definitely overselling the thing.