Not true at all. Diego Garcia is just one island among these Archipelago and it was always inhabited by the native creole-speaking "Chagossians".
UK evicted them forcefully in the 70's or 80's I think.
UK evicted them forcefully in the 70's or 80's I think.
This does not mean I disagree with the expelling being cruel and unwarranted. I do think it shouldn't belong to the UK, just don't think that "natives" is meaningful here or explains the reasons.
The equivalent is expelling everyone from Australia because US/UK wants to build military base there.