There will always be an accidents where someone who should have flown, rejected, and there will always be accidents where people who should have rejected, flown.
I just wonder, if more people died trying to fly a bad aircraft then reject into the grass at the end.
The accident statistics tend to say 'go' given all the bad reject accidents, but if someone tallied up the deaths from either way, I suspect the deaths from skidding off the end, are much less then flying to the scene of the accident.