This extension to the Twitter Block allows you to import an entire Tweet thread into the editor as native blocks.
Unrolling tweet threads is a Jetpack feature extension to the Twitter Block.
More information on adding the Twitter block is available here.
By clicking on ‘unroll,’ you will import the entire Twitter thread directly into your post. This converts each tweet in the thread into text, image, gallery, and video blocks as appropriate.
This feature is available in the block toolbar:
When the Unroll button is clicked, the URL of the tweet being embedded is sent to WordPress.com. The URL is used solely for retrieving the thread from the Twitter API; no identifying information is passed from WP.com to Twitter during this process.