Why do you think "best practices" are considered "best practices"? Is it because they lead to the most desired outcomes? If so, what do you think happens when best practices are broken?
Now I'll concede it's possible that RL can lead to finding new best practices. But that's not the case in the story relayed. It is only a good practice for the scenario because it was an unpiloted aircraft because it otherwise puts the pilot at too much risk (which is why the pilot say it was acting "as if" it had a death wish. He was anthropomorphizing it.) That still means it's bad practice when the goal is to save human lives.
Yes, I understand the concept of a best practice, and why breaking it is bad.
But that's not the same as being unpredictable. Those are orthogonal complaints, and nothing in your quote suggests that the "death wish" flying was more unpredictable.
And we already know that these cars act super cautious, the opposite of acting like they have a death with.
So that quote has no useful information that we could transfer to the car situation.
Now I'll concede it's possible that RL can lead to finding new best practices. But that's not the case in the story relayed. It is only a good practice for the scenario because it was an unpiloted aircraft because it otherwise puts the pilot at too much risk (which is why the pilot say it was acting "as if" it had a death wish. He was anthropomorphizing it.) That still means it's bad practice when the goal is to save human lives.