This article seems to be missing the point. Perhaps slow and expensive armored vehicles as well as vulnerable soldiers on foot should now be relegated strictly

This article seems to be missing the point. Perhaps slow and expensive armored vehicles as well as vulnerable soldiers on foot should now be relegated strictly to behind-the-wire defense, and that the only "safe" front-line forces are cheap and expendable drones and killer robots that will rapidly evolve to combat each other. The era of castles, knights, and trenches has passed, and so has heavy combined arms leading the charge.