This is not a public page. It’s just here so that in the WordPress “pages” feature we can assign child pages to this “folder”.
It is a published page only because that is required for it to be a parent of other pages. But, nothing links to it, so it won’t ever be seen.
NOTE: It does make the URL longer for sub-pages. Edit the “slug” to control what it says. For some reason it didn’t allow me to make it simply “2021” so I made it “2021_” this year.