A closed-source Google-developed OS for feature phones. Obviously it's the best spend DoD money so far. Just 20 millions. You need to track poor people too.
KaiOS is not a google-developed OS. kaiostech is its own company with offices in several countries. Google gave them financing but it isn't fair to them to paint them as some sort of vassal - Google funds lots of things.
If you want transcriptions, proximity indication, scanning wireless networks, expanding your geodesic grid to accurately locate dumbphones etc, you need custom software. This is what this is (mostly) about. Sure we can pretend it's about "harmless" data mining but there's no such thing.
Bingo. That's is what it all about. Free email, free cloud docs and photos, free browser, free web tools. KaiOS should be running Google code. Replace DoD with Google (Skynet from Terminator) though.