Android dev is mostly dead?

Imo all apps like facebook, twitter, Instagram, reddit, imdb, or anything else that requires network and gives almost no benefits are pointless (and always were).

I see most people are finally getting it and there are less useless rest clients nowadays.

There few use cases for such apps - if you are bad at webdesign and have lots of free time. And second thing - theoretically app requires less bandwidth for requesting only JSON.