That and a handful of early WhatsApp employees now work at Signal. WhatsApp, back in the day when they were just 30+ people, accomplished amazing feats of product and engineering given the scale and growth. I sense Signal has the ambition to outright compete with WhatsApp on most if not all fronts.

I, for one, welcome this; the larger market is asking for a privacy-focused WhatsApp alternative, and Signal could be it.