Agree that approach speed must be a factor in many cases.
I do not believe in the statement that keeping the speed up is safer. As was correctly pointed out, it simply increasesd the chances of removing the nose wheel.
Another problem which is more common is the use of an approach speed and a threshold speed e.g. "approach at 80 reducing to 70 over the hedge".
I much prefer to make a constant speed stable approach at 1.3 Vso. This provides a safe margin above the stall without requiring a large dumping of inertia in the hold-off and flare.
Finally, I prefer to teach students that the roundout and flare are to reduce the rate of descent...not to stop it.
Thus a steady approach at 1.3Vso which results in a gentle flare which reduces the rate of descent to an acceptible rate and the aircraft landing main wheels first is the best.
Another factor often is the pilot pushing forward on the stick after the aircraft baloons in the flare. The only remedy for this situation is a missed approach. When one looks closer, the reason for the baloon is often excessive speed and moving the column rearwards too quickly in order to arest the descent.
DFC