How so?
If two members on separate teams hunt together, why should one be penalized for their teamwork?
It was done so that nobody is slighted by sharing or helping someone else. In reality it doesn't hurt them or anyone else a bit..
Here is an example... Say Huck and his two team members have scored. But you have been struggling the entire season and have yet to score for your team. Huck knowing he has plenty of birds may be hesitant to invite you over to hunt.. It would hurt him in the competition and quite likely tie the two teams....
However, if huck can also get credit for the bird he called in for you.. Why not invite you up.. Actually he now has an incentive to invite you up rather than a penalty.. You both got the points for the cross team assist, and you got the joy and satisfaction of harvesting a bird. Where without it.. Huck may not have invited you at all because he didn't want to hurt his chance of winning.
It was done to not only foster people hunting together... But to also maybe entice someone into inviting someone... And when you have guys inviting guys to hunt and share the outdoors together it's always a good thing.. Bonds of friendship can be made online.. But nothing solidifies that like inviting someone over to hunt and helping them shoot a bird in the face..