Many lawyers in America still use WordPerfect, and I suspect Corel still makes and updates it for that reason :-)
I've heard from WordPerfect fans that it gives much more precise and reliable control over formatting than Microsoft Word, very important for picky court clerks and judges. WordPerfect also has a "reveal formatting codes" function, the equivalent of showing the HTML tags or Markdown syntax in line with the formatted result.
I haven't used WordPerfect in years, not since some WYSIWYG version for DOS (6?), so I don't have a personal opinion on whether it still deserves its popularity today.