That is the issue, the foundational principle of the United States was that we were a federalist system with a weak and narrowly defined federal government. The office of Presidency should be inconsequential to the Everyday citizen of either the US or the world.
The fact that we continually shift more power from Local / State government, then from Congress to the Executive is the exact reason the president is a "Symbol of Power"
>Kind of like how 9/11 wasn't about killing some office workers
Again the theory of Distribution apply here to building as well. World Trade Center was attacked because NYC is seen as the Central Place for world finance.
NYC has become too powerful and that power should be distributed.