The average Cowboys fan is far more sophisticated when it comes to honest evaluation than the stepford ra-ra types. You have mistaken candid and honest criticism for a lack of support.
In fact the opposite is true. I will make the analogy of those we might consider friends. Indeed, many times this team has felt like a friend.
Let's say you had information that was important to the life of a friend. Giving this information to him would create short term anger and sorrow, much of it directed towards you, the messenger. However, not telling him would create far greater long term damage.
A good friend would tell him, absorb whatever anger, and accept his apology once he realized you really were looking out for him. That is true friendship.
Trust me, when the opening kickoff is made, the Cowboys fans in this forum are going to root for the Cowboys and cheer them on with every ounce of emotional energy possible.
After the game, they will discuss every aspect of the game, offering both compliments and criticisms accordingly.
Do you not read all of the exciting comments when it comes to our rookies, our kicker, other players that have shown impressive improvements from last season? I agree it may not be completely balanced, but is it ever that way for any NFL team's fans?
As far as some fans expressing "hate", that is just the other side of the same coin expressing love. He cares. That is far better than expressing indifference.