I support the cause in general but: Signal is not federated at all. It may seem like a decent alternative to WhatsApp but is it really? It still falls under the same US jurisdiction. Let’s say the US gov starts agressively prosecuting dissidents and certain minorities (they already do): can and should we still use signal in this case? I don’t think so. Sadly i can’t name a much better alternative. Maybe matrix. But it has other issues.
We should stop being naive. Immersing ourselves as a society into facebook and twitter significantly contributed to the shit situation we are in now. Going to Signal seems like a short term solution. We should have some idea where to go on the long term.