Condolences to those who have lost loved ones....
Having flown the 146 (all models, military and civilian) I have to agree that its sturdy build and generally lower energy levels on the runway contribute to its high survivability.
1500 meters is not particularly short for the 100/200, but as I recall the aircraft is generally landing distance limited in its STOL ops.
I've landed the TQF jets down to 1000m, and on short dirt strips, and all I can say is it's 'technique, technique...or go around'. You plonk it down and let its excellent trailing link gear do the work. However, if you burst a tire you're into 'ere be monsters' territory - can't stop/can't go. Add water to the equation and you're probably just along for the ride.
About reversers: generally not much use below about 100kts compared to brakes. A lightish 146 would touch down at about 105-110, and if it had rev would not have them deployed and powered-up until about 95kts. Therefore they were not needed - wheelbrakes and spoilers with correct technique are sufficient.