I remember they pitched Mongolia as a place this would be used, but I fail to see how it actually would be. I haven't been back to Mongolia since this came out, but I would bet good money that no one (besides whatever government entity signed onto (bribed/schmoozed) the project) would use this. English isn't that common among nomads that it would make any sense. Everyone knows the Latin alphabet, but reading and writing is all in Mongolian Cyrillic, so it doesn't even make sense that way.
In the cities (where the large majority of the population lives) in the organized ger districts, there are street names and numbers, so this is really a solution in search of a problem.
I'm definitely an amateur at understanding biology, but having studied engineering; the inputs and outputs of the human body vary so widely that I have a hard time narrowing down one input to corresponding to one result.
When you think about the air you breathe, to the variety of things you ate (plus the additional microbiomes that inhabit the food, your skin, your gut, etc) it seems like we are just barely really understanding what the intakes to the body are.
A hammer drill (even a Harbor Freight one will do fine for a one time project) and masonry bit will drill through brick just fine. Put the line through, use raintight fittings, and then seal the hole with caulk. It's definitely not beyond DIY.
As someone pretty close to this camp, it comes down to your last bullet point - needing to do it, in my opinion. A smaller subset of those people will also learn VBA for the same reason-it helps them get their job done. The benefit those two have is that they are either built in to the tools already (VBA), or a DBA does most of the set up and the used mostly just runs queries against it and doesn't have to worry too much about indexing, performance, schemas, etc (SQL). If I were to try to turn them onto python, it'd be an effort to get it installed and then get them to use the commandline.