Threads is Meta's (Facebook/Instagram's) Twitter replacement, which they want to connect to the Fediverse, but most of the Ferdiverse doesn't want them to.
Interesting. So I assume it’s suppose to be going up against Mastadon then? I honestly would be fine with it as long as they open source there server code but let’s be real, they won’t
"Against" isn't really the right word, as you don't really compete on the fediverse.
All the platforms on the fediverse work together by design, the introduction of more micro blogs is good for Mastodon and the rest; there's already so many of them and you can talk to them through Mastodon, which is the way it should be.