Sentinel Island is part of the Andamans owned by India, and famous for having a tribe living there that have successfully and violently resisted all attempts to make contact with them. The Indian government now has the official position of leaving them along and ban anyone coming within 3 km of the island. They do fly over in a Helicopter occasionally, and after the Indian ocean Tsunami they dropped food and supplies to them.
Not a lot is known about their culture but sooner or later we’ll have tiny drones that can be disguised as insects and in theory be able to observe them without being noticed. Is there any practises you think would justify forcibly intervening in their society? Eg lets say they practised human sacrifice, or slavery? Gang rape rituals? female genital mutilation? Cannibalism? It is quite likely they do in fact practise Infanticide in some form, since the population seems to be stable and they don’t have any method of birth control. Would any of these justify us forcibly intervening to prevent them occurring in future?
As an alternative, what about if the intervention was in the form of using technology to create the illusion of a divine being floating in air instructing them that certain practises were now forbidden? After we learnt their language and their own religious beliefs from the drone recordings, so we would change their culture as little as possible.
If your answer to all of the above is “no, leave them alone” is there any circumstances you would support intervening? Suppose they all started to die of a disease that we could easily cure? Rats or other vermin floating on bits of driftwood or other garbage could easily introduce a disease to the island that they have no immunity to.