They’re not done yet. Just announcing (and the verge reporting on it).
Their announcement (here) is quite forceful though, interestingly. The article described it as a manifesto.
See also a recent post here about their survey on integrating activity pub: https://lemmy.ml/post/14734757
Will adopt*, in the future
That is a…hilariously bold statement. As much as I would love to believe that, the entirety of the Fediverse comprises ~1% of Threads. Not to mention Instagram or Facebook.
It’s talking about new networks not already established ones.
New? Old? Don’t think it really matters in this case