Right. I don't understand why you were downvoted.

I don't think Eton College was trying to imply that such a brutal intervention was moral or even necessary, but they simply wanted to test a student's ability to argue and reason that it was despite how difficult and internally conflicting such a stance would be to most people.

The difficulty was the point, no? They could've chosen a less controversial prompt, I suppose, but why not this one? What difficult stances are not controversial?