I don't think we're past all the climate tipping points; that'd start to cause runaway changes. Swift action right now would still provide a chance to lessen the impact.
The worst case scenarios would be truly disastrous though, and would cause secondary human conflicts due to unavailability of basic resources.
Isn't Waymo and others doing this as well? They do much more simulated training than real-world data to scale up use cases.
The article makes it seem only Chinese AVs are doing it