I think Elon asked it to be done after a slew of Tesla's got keyed/vandalized by people who hate EV's. It's gotten a few people arrested
https://futurism.com/tesla-sentry-mode-caught-vandal-model-3
https://futurism.com/tesla-sentry-mode-caught-vandal-model-3
Thanks. Well, on paper this sounds a lot more reasonable than what the parent described, but what they might be experiencing might simply be the difference between marketing speak and the reality of AI systems where the cost of false positives is practically entirely externalized, whereas anger about false negatives gets fed back right to the devs.