I wish we had a few of those fuckers flying today that could pop in and BOOM those ISIS scumbags
Umm, you are aware that the SR-71 was unarmed, yes? They could make a sonic boom if you like, but that probably wouldn't do much...
Did you watch the video in the OP? There was a specific context within which the boom is mentioned. A reminder of what can come from above would not be a bad thing to deliver even if all it does is make their camels all shit at once.
Not every action needs to be lethal, to make a point. Killing people is easy. Too easy.