https://ploum.net/2023-06-23-how-to-kill-decentralised-networks.html
Many of us do not trust Facebook and anything it is associated with or swallows up.
EDIT:
"Instagram head Adam Mosseri said "
““Soon, you’ll be able to follow and interact with people on other fediverse platforms, such as Mastodon. They can also find people on Threads using full usernames, such as @mosseri@threads.net.””
“We’re committed to building support for ActivityPub, the protocol behind Mastodon, into this app. We weren’t able to finish it for launch given a number of complications that come along with a decentralized network, but it’s coming,” he said.
“If you’re wondering why this matters, here’s a reason: you may one day end up leaving Threads, or, hopefully not, end up de-platformed. If that ever happens, you should be able to take your audience with you to another server. Being open can enable that.”
There are multiple concerns:
The basic principals of Federation is “killed” as Threads will try and bait people on ONLY using their platform. For example that they wont even show any posts/comments from others but in reverse they spam other posts with their posts and comments.
There will be a huge increase of users like multiple million users. With it that type of users who want to share literally every opinion. The karen, twitter “Free Speech” type. It will bring much hate to the fediverse.
Personally the fediverses goal is to have smaller instances and not a big boy that wants everything.
And they would try and monetize and advertise in the fediverse.