Yes, this goes to show that there are ~zero terrorists in the US. The US has an almost infinite supply of soft targets, but since 9/11 there have been no attacks of any consequence. There have been a few minor attacks like Boston bombers, but those have all been laughably amateurish.

The US has no terrorism problem. In 1979, the Irish killed the Queen's uncle in law, and in 1984, they blew up a hotel where Thatcher was staying. That's a serious terrorism problem! What the US has is nothing by comparison. We were unlucky on 9-11, and ever since we've been distorting our foreign policy out of unreasonable fear.