Yawn. Get on with the times. I've been using ultrawide (21:9) for years, and would definitely not want to go back to peeking through a square'ish hole.
You might want to refresh your memory of HN's guidelines. Link at the bottom.
Likewise, a monitor in portrait usually needs to be at least 1200(w)x1920(h) (ie. a 24" 16:10) to be usable for browsing today's web without getting served up a mobile-specific layout too often. A reasonably-sized 1080p display in portrait can be great for stuff like text editors and terminal windows.