Druxt fetches the view's result set once, then sorting and filtering happen in the browser. In a traditional Drupal theme each of these controls is an exposed filter and a full round trip.
Read the Views guide →Blocks, menus, views, breadcrumbs, entity forms and search all come straight from Drupal's JSON:API. You override a component only when you want to.
Or open this site in DevPod, with its backend, frontend and demo content.