This quote makes me really wonder about someone's motivations:
"If anyone feels like I’m picking on #Matrix, don’t worry: I have far worse things to say about #Telegram, #Threema, #XMPP + #OMEMO, #Tox, and a myriad other projects that are hungry for #Signal’s market share but don’t measure up from a cryptographic security perspective.
If Signal fucked up as bad as these projects, my criticism of Signal would be equally harsh. (And remember, I have looked at Signal before.)"