This isn't responsive to the previous comment. Either the messenger meets or exceeds the privacy and security of Signal or it doesn't. If it doesn't, that's material regardless of what you believe about the aesthetics of Signal or their communitarian spirit. Most people who use secure messengers are LARPing (often in a good-willed performative way, as a way of supporting the privacy of others who truly need it).
But some people aren't LARPing, truly need privacy, and compromising their safety to make a point about federation is immoral.
But some people aren't LARPing, truly need privacy, and compromising their safety to make a point about federation is immoral.