Excuse me while I actually answer the question as intended
That's your opinion.
I'd choose to force everyone to stay if it was unlikely that I would survive on my own. I'm more likely to survive with a group, although we would all be, on average, less likely to survive in the elements.
Or does everyone die if I cut the rope?
If this is a question of "would you kill yourself for the group rather than have the whole group die" let's say sure/this sucks.
I doubt you will find a correlation based on temperament (SP vs NT) anyway.