Agreed - WhatsApp data is getting added to their social graph for sure. However, they have not yet made any attempt so far to, say, inject ads into chats or on

Agreed - WhatsApp data is getting added to their social graph for sure. However, they have not yet made any attempt so far to, say, inject ads into chats or on the app itself. Despite their statement of end-to-end security, they still control the end points, so this kind of ad injection could be compatible.