Nobody will give a damn about the privacy changes. You've got to convince them based on other features like stickers, video playback and other "exciting" things.
Even if you do give a damn, it's realistically impossible to shift your entire immediate network to something outside of WhatsApp to a dual communications stack. This is why IPv6 adoption has been so slow - IPv4 "works already".
Or just the fact that is extremely much better in all ux departments:
- the app is now so much better that I was confused last time I used WhatsApp (I also think WhatsApp must have gone backwards, it was better before, wasn't it?)
- better admin tools for groups (mute, disallow stickers etc)
- disappearing chats. More convenience than security IMO but still something I use with my wife. I always lock my phone, but she lets our kids borrow it sometimes and I'd not to share everything we tell each with the kids :-)
- scheduled messages: remember lunch Lisa!
- and for your geek friends: actually open source, multiple client goodness. And APIs. And bots that you can create yourselves.
I think you get the nerds with privacy. But you get others with the network effect. So you get the nerds first and that helps build your initial base that helps expand your network. Get your DnD or boardgame group to use Signal. Then get other peers, then get family. The problem of converting people is the network effect. Similarly the solution to converting people is creating a network.
Yeah, the real selling points seems to be around the features. But i don't think people care enough about all that if majority of their friends are on WhatsApp.
