Combining Koehn's PAT and short FG (under 30 yards) attempts, he is 21 of 24 (87.5%). 22 of those attempts are PATs (20/22), which are obviously a bit easier because they are dead-center. Only 2 are short FGs (1/2). So his short-range accuracy has been pretty close to national averages (85%). So there is nothing automatic about taking a short FG, but the probability of getting those 3 pts is pretty high.
The overall point probability of going for it on 4th and short is probably higher if the situation is 4th and 2 or shorter, but the Hawks have struggled so far this year in those situations around the goal-line. They will have to determine if that is a schematic thing that they can remedy, a personnel thing which they probably can't remedy within season, or just dumb-luck which should average out over time once we hit on a hot-streak of conversions. I guess we will see how it plays out.
Before the last 2 games, we were converting at a clip way above average. Lately it's been worse to bring us back closer to average.