Good post and agree fully.
Having expectations and having those expectations tied to results doesn't make somebody fanatical or emotionally over the edge.
We live in a world of expectations. People are judged by their results, the more you are paid, the higher profile your position, the more likely you are to be judged by your results.
Does it ruin my life when the Buffs have a lousy season? No, life goes on. That doesn't mean though that as a supporter I don't have a right to have expectations of them taking the necessary steps to be successful.
If you think that winning and losing should be separated from supporting a team then your attitude is perfectly appropriate to support your local youth programs. At that level the lessons learned and experiences gained by the participants are more important than the final score. In BCS level college football, in the PAC12 the final score does matter and no it isn't unreasonable to say that a coach, a coach who is making millions of dollars to bring wins, should have his continued employment determined in large part by the results on the scoreboard.
This is not childish or fanatical or out of line. It is what is expected in major college revenue sports.