Arrogant Americans

Just about every nation tries in some way to venerate its glorious past, whether that manifests as Shakespeare's historical plays, the Roman myths of Romulus and Remus (tying back to the Trojan War), Homer's Illiad (same thing), the Shinto myths tying the Japanese royal line back to the goddess Amaterasu, etc.

Americans also do this in our tall tales, even while recognizing that they are factually false.
We treat them as symbolic of attributes we value and thus attribute to ourselves.

The legendary status given the "Founding Fathers" demonstrates the universal good-ol'-days mentality, to the point that the group as a whole (and the actual membership varies depending on whom you ask) is treated as a think tank of divinely inspired hypergeniuses.

Where Americans differ from the rest of the world, which has mostly come to regard its glorious past as either a product of art or a product of arrogance, is in the fact that a large part of our population BELIEVES THE MYTH.

Since most Americans are conditioned from day one to believe the legend, it naturally follows that we hold ourselves in high regard as the heirs to its glorious legacy, that being the United States itself.

Treating free education, high-paying jobs, nice homes and possessions, and early and easy retirement as our right is simply the natural outgrowth of such a mentality.
As a result we are seen as arrogant/greedy and stupid by much of the rest of the world.

We essentially believe our own hype.