@LMAOYEEN so, when you publish a web page, people can link to it on Facebook. That doesn't mean Facebook owns your website, and it doesn't mean they have carte blanche to do what they want with it.
When you let someone on another server follow you, that means you're giving their server permission to deliver your posts to that person. That's it. No other permission is granted or implied.
@LMAOYEEN If you don't want your stuff to end up on Threads ever, you can refuse subscriptions from Threads, or block the threads.net domain.