Full disclosure: I didn't watch the show. However, I've read the article you linked and some other reviews.

Maybe the real problem is that the audience, unlike the wistful Joanna Weiss, doesn't get off so much on yet another load of leftist Hollywood boilerplate taking over the show Apparently, the actual culprit in the nuclear attack was the head of Homeland Security(!)

A pile of movies with these kinds of messages have made about fifty bucks at the box office. But the critics seem like them.

This season, the good people of Jericho were occupied by an army loyal to a corrupt pretender government, which was intertwined with a Halliburtonesque company called Jennings & Rall. The small-town heroes had proof that the government was covering up the true source of the attacks, and may have had a hand in the plot. (In a nice touch, they had to prove their case to Texas, which had formed an independent republic and revived its Alamo spirit.) Yes, there were elements of crazed conspiracy theory here, but the premise wasn't entirely unrealistic; the vision of an encroaching military was clearly built on fears of post-9/11 government overreach in the name of national security.