What is the START button doing to cause the accidents?
I think Lee means not being able to kill the engine quickly enough, due to having to hold the button for N seconds before it actually decides to do anything
Possibly a legit concern - either way in a stressful situation you're probably going to fumble for the kill control (whether key or button) so that is probably a net increase in time to kill the engine
I am not convinced, however, that this is a big deal