But of course there are chinks in TWitter's armor, specifically the whole blue check debacle and that Twitter itself is rapidly becoming 4chan (or even 8chan) and advertisers are understandably fleeing.
Still, the chance of success isn't great. Launching it under the iG brand was probably a good idea, better than under Facebook at least.
Still, when it comes to open source and integration with third-parties I keep thinking of the quote "open source is for losers" (that might come from this [1]), meaning all but the dominant player embrace interoperability and open source in a desperate attempt to topple the dominant player.
I have no idea what usage looks like but I'm glad they haven't given up. I know Google would've canceled it by now (and probably replaced it with something that looks kinda similar, has a different name/branding but no compatibility with the old thing, if chat apps are anything to go by).
I still say federation is something tech people care about but offers nothing of tangible value to end users. There hasn't been a successful federated technology since email. For a reason.
[1]: https://siliconangle.com/2014/05/29/only-loser-vendors-are-t...