I mean, hell, even fiction writers understood the principle. Wasn’t Gene Roddenberry’s Prime Directive on Star Trek for Kirk and Picard not to go fucking around with other alien’s culture? This is just white imperialism by another name, but it’s supposed to be pitied and excused because it was in the name of some deity.
Like I said, the medical concern is very important. Even the previous Indian officials and anthropologists that had limited interaction with these people understood they needed shots, etc. to keep from harming them with viruses, etc. for which they had no immunity. This fucker ignored all protocol, especially medical, because arrogance made him think he was better than Indian officials, cause, you know, Americans and Westerners should be allowed to violate any foreign laws they wish (not...)