What's the point?
The article says:
This data included WhatsApp phone numbers, WhatsApp phone call establishment metadata and date-time stamps, as well as WhatsApp phone call duration metadata and associated date-time stamps. They also were able to acquire WhatsApp's phone call voice codec (Opus) and WhatsApp's relay server IP addresses used during the calls.
So, this "collecting" phone numbers, call duration and other stuff is clearly what WhatsApp needs to make the call.
Don't know exactly what the article is about. Somebody has looked into WhatsApp traffic and fails to find someone with their hand in the cookie jar?
Biting the hand that feeds IT
