I know that, but I don't think you are arguing that non-permit holders should be required to have training. Right? Your anecdote does not really address the issue we are discussing. I was just pointing that out.
I could point to lots of instances where cops, even FBI agents with loads of training, used deadly force incorrectly. Does that prove that training does not do any good? The anecdotes do not really prove anything, other than that people sometimes screw up. Even those with training.
Even with Utah's minimal training requirement, which involves no live fire, the permit holder knew that this situation was not one to be resolved with deadly force.
Either that, or he was a slow draw.