Sorry no, when a GM faction exists, it is reasonable to expect that sometimes it will be the GM faction that ruins your plans. BT is our INVASION continent, not our sole GM continent. I would love to know exactly what the Zuma faction exists for mind you, but while it exists it is reasonable to expect it will affect the continent.
Okay well, fine. But my impressions of the reasons why the Zuma have been attacking Terrab terrible have been absolutely awful. Then because the Zuma are so strong that it would be near impossible for Terran and it's allies to stop them it is extremely annoying.