There are a lot of terrible things about this Gruden story but I can't get over Bruce Allen forcing Washington's cheerleaders to do a topless photoshoot and then using his team email account to send the pictures to Gruden
NFL teams almost never go for it when they shouldn't, rarely go for it when it's a toss-up, and usually kick when the model has a moderate "go for it" lean.
They are still very conservative
Another view:
NFL teams almost always kick when they should, but often kick when they should be going for it unless the "go for it" recommendation is extremely strong
The worst decision of the year, by far, was Kliff Kingsbury sending out his kicker on 4th & 1, down 3, with 1:58 left in the game against the Dolphins.
One could argue that this decision cost his team a playoff spot.