I don’t know what country you are from, but I’m guessing the “free” vastly outweighed the “ad supported”. Furthermore, given the low ad revenue in developing countries, an organization seeking money probably could have gotten just as much by seeking a government grant or funding from a non-profit/NGO, and the whole process probably would have been easier in terms of securing revenue as well as app design (i.e., not having to design the app around ads).
I appreciate what you are saying broadly, but google ads doesn’t seem like the optimal way to facilitate this type of information creation and dissemination in developing countries.
Furthermore, Google has shifted from having “don’t be evil” as part of their code of conduct to straight up doing evil things. Trying to dress these actions up as being a boon for the developing world is approaching if not reaching the level of being a corporate shill. Again, there are better and probably easier ways to do this other than kowtowing to the Googlith.