Matching tones and being sycophantic to every whims. Just like many really bad therapists. Only they are legally responsible if they cause a death, which makes them care (apart from compassion and morality).
The criminal justice system is also a system for preventing individuals who perform unwanted action from doing them again.
You can’t punish AI for messing up. You would need to pull it out of circulation on each major screw up, which isn’t financially feasible, and you would need to make it want to prevent that.