It's true that, as part of counterinsurgency, you still have to kill the enemy. And it's furthermore true that Pete Mansoor, the first director of the counterinsurgency center at Fort Leavenworth -- back when it was run by Gen. Petraeus -- came from the armored brigades. I got to interview him during that period and asked him how tanks could make a good counterinsurgency tool: it struck me as counterintuitive. I don't recall his answer, but it must not've struck me as terribly convincing. (It was otherwise a great and enlightening conversation. Mansoor, as history has already recorded, is pretty smart.)
You fight a war with the tools you have, I suppose. But U.S. forces have eased up on long-range bombing from the air in Afghanistan because it too easily can kill innocents instead of the targeted insurgents. I guess I'm skeptical that a tool that allows you too hit targets a mile away will be a significant improvement on that.