Use your iPhone as a webcam on Mac - Apple Support
I.don’t.know…but can confirm that many settings do mysteriously turn on or off especially after upgrades.
It’s sneaky, pushy, but there’s nothing one can do about it other than to heave a tired sigh ”C’mon, Apple 🧐” and set them back when discovered. Too clever by half as they say, but easily caught.
Known culprits: Game Center, which will even log you on with an Apple-assigned handle, iCloud, Private WiFi Address, “Recommended for you” and until recently Bluetooth, which would always come up On after an upgrade even when set off. They’ve replaced that with a prompt for “Stolen Device Protection” even if it was previously declined. Go figure.
I police these settings after every upgrade, highly recommended. Best to keep a tight leash…all the best.