"
when it's done even despite the objections of the ethnic group in question"
I thought I addressed that with part you omitted quoting, "although there are of course the inevitable malcontents."
Who speaks for these people? Have they ever submitted these sorts of questions to a vote?
As long as e.g. there's a reasonable number of Apache tribes-members who are proud our biggest, baddest, proven in combat attack helicopter is named after them, I don't give a [expletive deleted] about the malcontents, most especially including the SJW crowd.
And if Sherpa has mutated into simply "guide", that's also addressed, in my "I can't speak for post-70s" qualification. Given your closeness to that situation, are all or even most of the "Sherpas" upset with all the connotations the word had accumulated in English over the decades? If you claim the latter, how do you know?