Signal having the server code closed source for more than a year so the Signal devs could get a headstart and insider knowledge
That argument makes absolutely no sense. This server-side code does almost nothing. The only task it really has is passing around encrypted packets between clients. All of the encryption is client-side, of course including metadata encryption. That’s how end-to-end encryption works. The server code really doesn’t matter. The Signal protocol, which is used for client-side, local, on-device end-to-end encryption has always been fully open, and it can be used by any app/platform.
How one can trust Signal after them showcasing what they truly stand for is mind blowing
It’s very simple. The client is open source, and the encryption happens locally within the client application. You don’t need to trust anything or anyone except for the code and mathematics, which are fully open, so you can verify them yourself.
It’s mind-boggling how people attempt to spread so much misinformation while having absolutely no understanding of the topic their talking about.