Earlier quoted context omitted.
It was always a clear business transaction: acess to a messenging service for access to meta data (and now message data). I wonder how Out of curiosity: Does anyone know how the new Whatsapp TOS differ from the Gmail TOS in regard to user data and privacy. How does the Facebook group use data differently than, say Facebook or Microsoft?
So what should self sentient person do, just lie down and accept the erosions of our blood won freedoms? No thanks. I have right now all my company talking to thousands of customers explaining this mess to them and helping those who need to switch to Signal. So yeah, fuck you FB!
Signal is another private entity with complete control of the servers and end client binaries. The fact they happen to open source the code is kind of moot since no services are allowed to write alternative implementations, no one can run their own servers or prove what code is running on Signals servers, nor can anyone even distribute reproducibly built binaries from said source code for accountability (e.g. f-droid).
There are so many better options. I suggest Element/Matrix which can even bridge to WhatsApp and Signal as needed thanks to community contributed bridges.