Ralph can correct me if I'm wrong, but I was told part of the reason for this rule was to prevent the bunch kickoff. Problem is, if done right, this doesn't eliminate the bunch kickoff at all. If the huddle has no player more than 5 yards deep, and the huddle keeps 4 on either side of the kicker, nothing makes them spread out, nothing prevents the bunch, it can be done just as before.
If you can't see there are 4 on either side, that's not a foul. You have to see that there AREN'T 4 on each side for there to be a foul. And in that bunch kick, you may not have any idea who the kicker is until he kicks the ball. If there were then less than 4 on one side of that player, then the play is "retroactively" killed, which also violates the principle that no foul causes the ball to be dead.
FED didn't "bend" the rules here, they butchered them and pieced them back together to fix something that could have easily been prevented by using the word BALL instead of KICKER.