Her wasn't a warning message about the dangers of AI. It was Spike Jonze reflecting on the slow dissolution of his marriage, coming to terms with the idea that he had taken his wife for granted, an always-available thing that existed to validate his feelings, rather than a whole person who was growing and changing beyond him.
Anyone who hasn't done so should try watching Lost in Translation and Her back-to-back. They both star Scarlett Johansson as a thinly-veiled stand-in for Sofia Coppola as each filmmaker examines how their relationships impact their self-image and ambition. Together, they form such a detailed and affecting picture of two sensitive people who just can't connect. It's like (other ScarJo movie) A Marriage Story, but more nuanced and capable of occasional levity.
I drove a rental that had collision detection in it. Three or four times, it suddenly slammed on the brakes for no discernable reason, and with no regard to how close/fast traffic behind me was moving. I had to pull off, download the manual, and figure out how to turn it off before the car killed me.
One of the most important things in safely operating a vehicle is using gradual, predictable movements. My car braking without my input makes predictable movement impossible.