The critical thing about hidden missiles that you seem to be missing is: you can't bomb them if you don't know where they are.
We've already seen a 4 week bombing campaign that has included everything from a children's school to a chemotherapy company to bunkers under Tehran, so I don't think there's a lack of "bloodlust" or "gumption" from any of the so-called leaders at the DoD. Rather, it seems that they simply - don't know where the missiles and drones are. Which as I pointed out earlier, makes it rather hard to bomb them.