Perhaps by 'untouched' they mean uncontacted? The Sentinelese people of North Sentinel Island are a well-known example.

https://en.wikipedia.org/wiki/Uncontacted_peoples

The poster also says about how we could wipe a remote tribe out in minutes. Something similar has been in the news recently with an AI angle: https://thethaiger.com/news/world/chatgpt-leak-exposes-plot-...

I'm aware of the Sentinelese, I was just trying to keep us from falling into the trap of speaking on their behalf from our comfortable modern office desks, painting an idealistic picture of a society where no modern medicine or food surplus would be appreciated.

You'll notice that the comment began by saying "let's compare" but then no actual comparison was made; nothing was actually said about the reality of these peoples' lives, they were simply reduced to a rhetorical device.