He ejected in the ground??? Must have seriously "departed the prepared surface"!!
Many of the instructors I work with brief 50 kts as the speed difference between sticking with it or punching out if leaving the runway. Think a 25,000lbs jet at 65+ mph on tricycle gear is likely to sink into the softer ground, then cartwheel. An F-16 probably touches down at over 140kts...that’s a lot of energy to bleed. I’d rather ride the silk than take my chances with possibly cartwheeling off the side of the runway in a beer can.