Required in the EU and will be required in the US soon. BYD’s big export market is Australia which doesn’t require them yet but they’re mandatory to get a good crash safety rating.
Renault and a lot of BYDs use Android as the software os, so probably it’s Android doing the facial recognition (and also probably the attention eye tracking) and that’s onboard.
Renault has a dashcam function that records from the built in cameras, but you have to plug in your own USB drive, so the upside of memory price-fixing is it’s probably not worth it for Renault to spend $300 to store the data now.
Best theory I’ve seen is undeveloped foreskin is a birth defect that is a lot more common with inbreeding. Ancient Egypt started doing circumcision in the upper class at a time when their royals were very inbred, so it’s like how Europeans all started wearing wigs because France had a bald king.