Insurrection is easily the poorest of the twelve Trek films.
In YOUR opinion.
The Ba'Ku have been on the planet for centuries, right? Now look at the US. Founded in 1776. Meaning less then 300 years old. Most families haven't even been there that long, having migrated during the 1800's. So, if all the native Americans would now say 'leave our land, because you took it from us and it is ours', what do you honoustly think would happen?
Perhaps they are only 600 of them, perhaps they weren't born on that planet. But ultimatly, they are now as native to that planet as US citizens are to the US. And forcing them to leave because the UFP thinks they need some form of radiation....