Having just poked through various INI settings (functional or not) including the Fallout4Prefs guide here, the Fallout4.ini topic, and spending a good hour or two staring through the Fallout4.esm's Game Settings (in xEdit), and seeing various camera-related mentions (and VATS ones in the .esm); Could it be one or more method Beth uses to test (or create) VATS-like camera angles/movement models? Particularly since it uses a certain path and a .nif, with an offset option. There's a couple s*Offset's in the .esm's for offsetting the camera height for VATS and their 'Dialogue' camera. Maybe, maybe not, but it would follow that to test out functions of how the VATS camera worked in-engine, they'd have a way of "loading up" a certain setup to test, and there's some test-leftovers lying around already, so it'd make sense to me.
