my position is that the Federation would be in the right to relocate the Baku even if the Baku were native to the planet and weren't even in Federation space, but that may be a minority position on this message board.
Probably becuase by doing so the federation would become one of those badguy planet conquering empires they usually fight against.
I'm not a believer in rigidly deontological ethics. Context matters when evaluating ethical decisions- they're not "conquering" anyone, they're relocating a small village for a vastly greater good. If you can't see that, then you're probably one of those who think a starving person should go to jail for ten years for stealing a loaf of bread.
"but he was starving!"
"it was STEALING!" "He's a thief, context doesn't matter, it's all about rigid rules that are totally devoid of the context of the situation!"