I post this mainly because it is challenges a fundamental belief of Americans. I don't necessarily agree, but it is an interesting thought experiment. The article lists three reasons, and the first two relate to treatment of non-white people. As a white American I enjoy a great standard of living, and I don't want to give that up. But my way of life was achieved through the exploitation of others. I do wonder what another path would have led to.
The last point is about our style of government, and I agree completely. I would love to change to a more parliamentarian form of government.
Who knows how American and the world would be different if the American revolution hadn't happened or been won by the British. History is too complicated to simplify as much as this article does, but it's an interesting thing to think about.