Documents on Dropbox Paper show a public list of everyone who's ever viewed it

When viewing e.g. https://paper.dropbox.com/doc/catherios-dating-profile-Wt2wu19F4z1hUEKk8QXK4, you're shown a warning saying viewers' are public. But there's no mention of them being public in perpetuity.

If you view the document, you can see the names and email addresses of all signed-in viewers who have ever opened the document.