To show on sharing towards the fediverse, go in your Account Configurations, faucet on Fediverse sharing (Beta) and Stick to the Guidelines. Sharing on the fediverse is accessible to Threads people ages 18 and up with public profiles. Threads also designs on allowing end users observe non-Threads fediverse accounts and https://econopass.com/news/world/is-the-fediverse-a-threat-to-centralized-social-media-platforms/