Ok, if thats the case, i concede that the mentaltiy was wrong ... but the decision was irrelevant.
If KC got the ball first, let's say they go down the field and score a FG ... Shanahan still probably plays conservative and would not go for on 4th down in field goal range
Defenses can make plays too. It should not be too much to expect your defense to at least prevent a touchdown. The blame goes both ways