Why so aggressive?

There is a clear reasoning for this strategy. People and especially press talk more about the product.

Btw, I think Snapchat is quite intuitive. Some features might not be easy to find or to know about. But once you know it is very intuitive and fast to use them. I think it is similar to Vim, if you don't know anything about Vim you cannot even quit Vim but once you know all the stuff Vim is one of the most intuitive editors because UI and most commands are well designed.