https://tamouse.github.io/blog/politics/2019/10/02/why-is-th...
EDIT: it could also be argued that this controversy is beneficial for the Chagossians I guess. I didn't know anything about them until I purchased a .io domain a few years ago.
But if those TLDs don't even bring them any money and they're not named after something in the Chagossian's own language, do they even own them in any meaningful sense?
Aside from the right to return to their homelands, these people should be given some actual royalties from .io domain purchases. And then maybe also a new TLD that is more meaningfully connected to them and less likely to be hijacked.
You can fantasize about the hardships the citizens suffered for the appropriation of the .io TLD and draw any analogy you want, but there are probably more pressing needs of the people you're not addressing by spending time to supply this sort of sympathy.
Worse, imagine a world where you actually advocate for the displaced indigenous people to care about this problem. Probably you'd be asking them to divert attention from real problems such as being able to afford food tomorrow.