Apparently this is officially documented at https://www.notion.com/help/public-pages-and-web-publishing#... buried in a note:
> When you publish a Notion page to the web, the webpage’s metadata may include the names, profile photos, and email addresses associated with any Notion users that have contributed to the page.
This is, as a notion user with public pages, beyond stupid.
Some CMSs do this in their RSS feeds as well. Can't recall which ones, but seen it.
That's just ... absurd.
The flaw itself is absurd but then just accepting it as "by design" makes it even worse.