It's good if you want the bulletproofness and archiving accuracy of archive.today, but don't want Google spying on you (archive.today requires you to complete a recaptcha challenge every time you want to archive a web page and your cookies expired).
It also works with JavaScript-heavy websites like Mastodon and Youtube, which the standard "Save Page" feature implemented in all browsers usually fails to save, though some features like collapsibles are missing.