Migrating from Whatsapp/Messenger to @signalapp is a good thing and I encourage everyone to do it.
But Signal being centralised (on purpose to avoid complexity), we knew it was a temporary solution. That it was not sustainable. Some day, It will either enshitify or crumble under its own weight.
Turns out that day is closer than we think:
https://signal.org/blog/signal-is-expensive/
Time to prepare the future. What should we do ?
XMPP
Matrix
Email! Delta chat FTW
Back to Whatsapp. Everybody is using it anyway

Privacy is Priceless, but Signal is Expensive
Signal is the world’s most widely used truly private messaging app, and our cryptographic technologies provide extra layers of privacy beyond the Signal app itself. Since launching in 2013, the Signal Protocol—our end-to-end encryption technology—has become the de facto standard for private commu...