But it says this was only a problem for documents that were not converted to Google Sheets etc. I don't think editing everyone's PDFs and every other kind of document that has clickable URLs is the easiest way to solve this.
Looks like it only applies to a "Preview" feature, so I imagine they're already parsing the contents to render the preview and are either adding a redirect or a no-follow attribute.
Native-native docs wouldn't have a referrer because they wouldn't be rendered by the browser, so links would be a direct hop.
