Lock Screen Recording In Privacy (System Preferences)
Some settings in System Preferences are shared among all users (same for everyone), and some only affect the currently logged in user (each user can customize). The Screen Recording panel only affects the currently logged in user, so the standard account isn't affecting settings for anyone else.

To really restrict a user from Screen Recording, you can do this:


Open System Preferences...
Screen Time
Content &amp; Privacy
Apps
Disable Screen Recording


Or just set an App Limit for System Preferences so that it can't be used at all.