Then, wouldn't leaving them be also fit that tenant? You are basically arguing here that they should have their whole world turned upside down, inside out.
It would be one thing if they are aware of "civilization" and made the choice to make contact with them(us) and begin to interact in a limited and cautious way. And who's to say that they haven't observed aspects of the modern world as they traversed their territory and beyond, but chose to stay away.
But ripping them out of their world, showing the big bad modern world and saying "choose" to live here, or go back to the forest, is interfering with their lives, which you say violates conservative tenants.
Who is for “ripping them out of their world”?
Contact is inevitable; and when that occurs, it’s their business.