Bear with me here. The diff drop procedure improves CV angles on lifted trucks when they are sitting level. This is a good thing. Moreover, at full droop the angles are also better. However, at full droop there isn't much weight on the wheel and hence not much torque flowing through the CV so I would think there is less chance of breakage. When the wheel is fully stuffed, the CV angle is worse than before and if you have a locker up front there is more torque flowing through that CV shaft since so much weight is on that wheel.

Do you think it would make it more likely to break a CV because of this reason?