The way I read it:
regular King have 0 % chance to drop BB items
KSNM will drop 1-??? items to pop regular king, and 10% chance to drop BB item
Regular king has a chance to drop item to spawn HQ king, 0% chance to drop BB item
HQ has a chance to drop BB item.
In summary, ksnm and regular king no longer give ANY shot at BB item, how is that better at all?