I totally disagree with this pack's decision, but I think leaving a pack over it seems a bit extreme. I don't think the "point" of the policy is to give some advantage to particular kids or to claim nobody loses. Its just that if the parent of a Lion/Tiger cub reads this forum, that kid is going to take up a district slot for the next six years, which means fewer kids are going to get some opportunity to advance. Sending the top few most senior scouts means more kids get to go once or twice, and those scouts still did quite well at the Pack race. Those same Lion/Tiger cubs are surely going to advance during their time in the Pack.
Again, I think the policy is on balance wrong, and I don't even slightly blame Pack76oldtown for being on the bitter bus right now. I just think it would be pretty wrongheaded to leave an otherwise solid pack over something like this.