Shortcut Rotate Display -
The Shortcut to Rotating Your Display: A Game-Changer for Productivity
Pressing the shortcut cycles or sets the display orientation immediately. The change applies to the primary or currently focused display (configurable).
solves this instantly.
If you have a monitor on a swivel arm, or if you work with documents/code that benefit from vertical orientation, this tool is essential. It removes the friction from the process and actually encourages you to optimize your workspace on the fly. Simple, effective, and highly recommended.
This feature allows the user to instantly rotate the screen orientation (e.g., from Landscape to Portrait) using a keyboard shortcut, without opening display settings menus. It is ideal for users with rotating monitors, tablets, or presentation setups. shortcut rotate display
Pro Tip: For some older MacBook screens, you may need to hold the Command + Option keys while clicking the "Displays" icon to reveal the rotation options. 4. Third-Party "HotKey" Solutions
Macs don't have a native keyboard shortcut to rotate the screen, but you can change the orientation quickly within the System Settings. The Shortcut to Rotating Your Display: A Game-Changer
Long-form articles and PDFs feel much more natural in portrait mode.

I am a huge believer that rational thinking is the key to finding true happiness.
Mo's 3 question approach is great, thank you for sharing Julio!
Mo’s book is on my list!