its because 126 is already done. Theres no competition to the #1 team there.
Thats the reason everyone has the luxury to make CS only in most cities. They don't get attacked, or need to attack anyone.
Thus theres not many actual BP to be found anyway. And while the domination system asks for more cities per player, someone has to do something rather than spamming city festivals.
If you open up the server, 10-12k ghosts all over, more than 40% big players on VM after they quit. So all these BP can only contribute to taking dead/ghosted cities inside domination circle anyway.