Signal is great, easily one of the best apps I've ever used. As someone who's privacy conscious, I've been trying forever to get my network of friends, family and colleagues to use signal with literally no success. Here in the UK, WhatsApp is ubiquitous, and to even _think_ of using a different app is, by most laypeople's standards, absolutely weird. Most people I've convinced have downloaded Signal, gave it a go with a few messages, and them promptly went back to WhatsApp because that's where the majority of their communication happens.
I'm convinced that it doesn't matter how good the product is, what matters is the network effect. Nobody cares about privacy, what they care about is whether everyone else is using the same app. Until there's some doomsday scenario of everyones messages getting leaked or something (the closest was the WhatsApp privacy policy changes that triggered worldwide scrutiny and was a general PR nightmare), nobody will be moving en masse to a plucky small app that their network isn't on.
Also doesn't help that Signal are implementing features like crypto transactions that most people don't care about.
I'm convinced that it doesn't matter how good the product is, what matters is the network effect. Nobody cares about privacy, what they care about is whether everyone else is using the same app. Until there's some doomsday scenario of everyones messages getting leaked or something (the closest was the WhatsApp privacy policy changes that triggered worldwide scrutiny and was a general PR nightmare), nobody will be moving en masse to a plucky small app that their network isn't on.
Also doesn't help that Signal are implementing features like crypto transactions that most people don't care about.