All great points, maybe my view of Meta as a single entity isn't a good way to think about them. I wasn't aware of their open source work outside of LLMs so that is interesting. Your right on with your assessment of what they've done in the social media space. I disagree on the point that they want to mine fidiverse user data, just because I don't think they need to do all this work to integrate threads into activitypub to do that, there are easier ways. But I think your right to be skeptical of Metas intentions.

On the other hand, big companies adopting Activitypub could be a great thing for the fediverse. So risks and benefits. I'll keep my neutrality for now. But you make a good argument.