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.
I agree that there’s plenty of FOSS projects as good as or better than Signal from a crypto POV.
NONE of them are anywhere close to signal when it comes to number of users. And if your friends don’t have it, then you can’t talk to anyone on it.
And if your friend loses their phone and finds out they just lost all their chats too, they’re gonna say ‘fuck that, I’ll just use iMessage so next time I don’t lose anything’.