Signal is a centralized app, run by a company. If they are offered enough money or legal threat they will sell out or close.
I am sure people will make an argument that its FOSS and people will just fork it if it goes bad, but a new fork will have 0 users and Signal will still have all of your old contacts. Why not make a switch now? Before it is even more popular and you have more reasons to stay? Why fork it if there are already decentralized apps that use same encryption, like XMPP apps?
Sure you can find flaws in every app, including XMPP implementations, but if we will have to write code for a new Signal fork, why not just fix whatever is that bugs you in XMPP clients?
If you want to use Matrix, that is fine as well, we can always bridge the two open protocols. But you cant bridge Signal if their company doesn’t allow it.
Why would you trust Signal more than XMPP that uses same encryption? I think people are just afraid of things they haven’t heard of, even if they have been there for longer and have a better reputation. This is why marketing is the biggest business in the world, google and facebooks only revenue is selling ad space and they are richest companies in the world. Fight that marketing, learn a bit about XMPP and you will see it is far better than Signal.
I tried hard to push XMPP back in its day. Little success sadly, that was when IM was going out of style in favor of SMS. I kept using Trillian and watching as more and more contacts went offline never to return. Then Google announced they were killing their XMPP gateway and that was a nail in the coffin.
The bigger problem with XMPP was varying support of various XEPs leading to an uneven user experience with mismatched clients. That in itself was fixable, and not a problem for people like us, but it became a problem when trying to get ‘normies’ interested. Tell someone like us ‘you can’t video chat that guy, his client doesn’t have calling capability’ and that makes perfect sense. Tell an average person that, and they hear ‘this system sucks and I can’t count on it to do what I want, I should stop using it’. Then they go on Discord or iMessage or whatever, and it works right the first time every time, and they stay.
And therein lies the real problem. You and I can wax poetic about the pros and cons of this or that system and its security, but if I can’t get my non-cryptohead friends to use it, then it’s worthless.
And THAT is why Signal succeeded and XMPP failed. Because it’s dead fucking simple to set up. Download the app, punch in the SMS security code, and you’re online. Questions like ‘choose which client software you want’ or ‘pick which instance you want to sign up with’ kill adoption for average non-techie people. They say ‘I don’t know what to choose, I don’t want to choose wrong and cause a bigger problem, so I’ll just not choose and close this’.