Please bear with me if this doesn't belong here. Normally I wouldn't dare posting on HN (don't want it to become mainstream and have idiots like me gush out their opinions) but I really dunno who else to ask this.
I would suggest reading through their blog posts if you're curious about all the work they're putting into ensuring that they collect as little data about their users as possible. they truly are innovating in a field where nobody else seems to care about ensuring privacy first.
This does come at a cost to how quickly user-facing features arrive compared to their competitors, but this is because they think through where you may leak data and engineer a way around it before allowing a feature to go through. That said, at this point it's pretty much at feature parity with WhatsApp, so moving over to it would be a great time to do so.