Yes there is FUD around signal. But they are not offering any better solutions.
Signal has some structural issues, and isn't a good solution for all threat models (i.e. if your a government who doesn't fully trust the USA, then signal isn't for you)
Any conversation that doesn't talk about briar, simplex, etc is deeply flawed since only they attempt to address the fundamental structural issues with signal.
Don't use that centralized chat service, use THIS centralized chat service - is just FUD... and isn't a helpful conversation.