Edit System Files on Monterey

I'm trying to use solution below to fix a monitor display issue, but I'm unable to edit the system files on Monterey. Does anyone know if there is another way to either resolve the monitor issue or gain Read/Write access to the System folder?

  1. Download the ruby script: https://gist.github.com/adaugherity/7435890
  2. Run the script with "ruby" followed by the script location/name
  3. Move the folder created by step two into Displays/Contents/Resources/Overrides/
  4. Reboot

Source: https://forums.macrumors.com/threads/big-sur-force-rgb-mode-for-displays.2268099/

Edit System Files on Monterey
 
 
Q