Another example of a virtue signaling disguised as criticism of virtue signaling.
I'm not trying to convince anyone here, merely broadcasting information that I am privy to which I suspect most here may not be.
In my youth I was a very zealous Christian, and went on mission trips to Peru, South Africa, Honduras, and Mexico.
When I reflect back on those times I feel ashamed of my assumptions about the people we were trying to "save". I am now hyper-sensitive to the idea that some ways of living are qualitatively "better" than others.
Certainly in South Africa, around Johannesburg the poverty I witnessed in their "townships" was truly painful, but that itself was caused by colonialism, and rough history of apartheid.
The dead sibling comment to yours does make a point, we shouldn't assume these cultures (OP cultures - not mapped, not tracked) don't want to adopt some of modernity's benefits, but we also shouldn't assume that they do.
There was no religious component to this. Only good outcomes have come from this (and the other two are still doing it). I do not regret doing it except that I clearly have far greater comparative advantage making money and giving it away than doing this myself. Also I enjoy writing code more.