The recent excitement surrounding Thread's arrival on the Fediverse is concerning. To understand why this is not a good idea, consider their economic interest in harvesting data, their poor moderation, and their manipulations. Nothing good can come from their federation. Don't roll out the red carpet for them.
The Fediverse is essentially public. . . would they not be able to harvest data regardless of whether they did or did not federate?
Also, regarding, "poor moderation and manipulations", that's literally a risk with *every instance*.
You either do want distributed, decentralized social networking, it seems to me, or you do not. It may end up being the case that most instances end up blocking threads, if it ends up too terrible.
But for the most part, people can choose who they follow and don't follow, and can block people they find objectionable.
All the risks cited, are risks for every possible instance in a federated system. What is so special about Threads?