[shxdow]

Unless memory is failing me, WhatsApp had ~55 employees (engineers ?) when they were acquired, also I doubt that Facebook is now pumping tens of thousands of engineers on a product that kept itself up with more or less 50 people. Moreover, I'm not sure what sort of change were they even supposed to bring to the app when their goal, as WhatsApp stated, was to take over SMS as global messaging system.