Meta is treading carefully, doing a phased implementation while continuing conversations with Fediverse leaders. This will give the company more time to iron out some of the integration kinks. “Do we adapt the protocol to be able to support this?” Lambert asks. “Or do we try to do some kind of interesting, unique implementation?” For example, Threads supports audio posts, a feature not currently supported within ActivityPub, so Meta is experimenting with “federating” a text transcription of the original post instead of the audio version.
It was never a good idea federating with Threads
Laughs in Funkwhale, Castopod, and even any ActivityPub platform implementing an Audio object type
Wired checked no Meta claim against reality.
Even Misskey is allowing exact audio object type.