The premise of the article is that the tea party's power is being overrated by the media, when the truth is the media tried to avoid reporting on them until they could no longer ignore them.
The tea parties are composed of private sector people who have had an epiphany, they finally realize that they can sleepwalk no more while being attacked, vilified, and openly declared as the enemy by government. The private sector is under seige, Obama just crystallized the fear and anger that was already there.