To be fair, signal is an open source protocol that anyone is free to implement.
“The Signal Protocol (formerly known as the TextSecure Protocol) is a non-federated cryptographic protocol that provides end-to-end encryption for voice and instant messaging conversations[…]”
Signal is an encryption protocol, not messaging protocol. My comment was about a messaging one like XMPP or Matrix.
Where? Like, no. Maybe they somewhat support software they have in the chain of usage like any other company and that’s it. Yes for taking the challenge, but like Spotify, complaining about roadblock of another company, does not make them good.
But not to say this should be the place to trash on Epic.