The very thing that makes the Fediverse special—the ability to seamlessly cross a platform boundary and talk with one another—relies on striving to keep things as open as possible. An open network fulfills the promise of an open internet. Open is good. Open lets ideas flow, it lets people share cat pics and express love for one another, and it helps us to learn. Meta may be awful, but the Fediverse is neither for nor about them—it’s about empowering our friends and families to connect even if we’re using different software or services. Source: Neatnik Notes · A Fediverse, if you can keep it

Clap emoji, clap emoji, clap emoji. That’s why ISN’T blocking anything. You can block threads if you want to, but the server itself isn’t blocking Threads.