I think the irony is that so many attack Signal for pursuing more features. While they aren't features I personally care about I do recognize that I can't have secure communications with people that are unwilling to use secure means of messaging. While I want anonymous identities (not actually usernames akin to what we have here) I do think the social graph is far more important. Not that you can't work on both at the same time (though Telegram and WA have significantly more developers)