No! Say it ain't so!
Actually, 99% of GWs I've come in contact with have been great guys. Even when one (mistakenly) thought I had committed a violation, he acted with courtesy and professionalism.
There's one in my area now, however that does seem to think he's really special. He stays in his truck mostly, unless he's at a fast food joint.
I don't mean any of it negatively towards any wardens. In fact I know a good number of the wardens in western Oklahoma and have worked with several of them on countless occasions. The FB page seems to be portraying the "without us, wildlife conservation wouldn't exist". When in reality, the law enforcement side of things is only a piece of the puzzle in the over picture of wildlife conservation across the state.