I don't know of a way in coding to turn off but it should not be that sensitive if you are running "Customized" safety settings in "late". In fact manual says it won't auto brake in "late". I never had a unexpected braking event. Maybe dealer needs to calibrate it.
I like having the 2nd Sport mode because I set up Sport Individual to normal suspension & trans so I can still get Sport exhaust when driving normally.
I wouldn’t want to give up the split screen option with this change. I love being able to run dual maps or maps/audio on a trip shown in this roadtrip video.