I think we need to look at each part of this video.
Production value isn't bad. Not big leagues, but good cuts, some synchronization of the dance. The choreography is definitely amateurish. For the production value, I wouldn't expect Glee.
The voice is flat, and I agree with @5, the harmonizing at 2:34 definitely needs work. Audacity has a nice pitch modifier you can use. Some notes are hard to hear.
On the tune- I must admit, I watch it this morning and the tune stuck in my head (the chorus anyway).
On the energy - she's definitely having fun. The cowboys seem to be enjoying the paycheck. More power to both her and the cowboys. I do music videos with my kids, and we do it more for fun. Sort of like being in a play - the players are having a lot more fun than the people watching it..
On the Jesus thing - yea, she definitely seems religious.
Which leads to the genuine criticism/issue with the video - the message. Basically, the messages are: (1) you need to control your man and to do this you need rules, just like high school (!) (2) looking at other women is okay as long as it isn’t too obvious. This would work if you man is, well, in high school and hasn’t learned this by being with a woman for more than 5 minutes in his life. That being said, half of country songs have this theme. See Shania Twain's "Any Man of Mine" http://www.youtube.com/watch?v=8N2k-gv6x…
All in all, fun to watch in a car-wreck sort of way.