CKEditor 5 in Drupal 10: what is there to be excited about?

There's so much that's new and to be excited about in https://ckeditor.com/ckeditor-5/! It doesn't just look better, it works better: way smoother UX, collaborative editing, browser-specific bugs are a thing of the past thanks to the new architecture, it works great on narrow viewports (aka mobile devices), and so much more.