It certainly seems bizarre to me, as a glider pilot, that it is normal to wear a parachute in a pure glider, but not in a motor glider (Falke) which is often in the same thermals. Sitting in the middle of the Falke's fuel system (tank behind, gascolator etc. somewhere above my knees and the engine only a few inches in front of that) and in a fabric covered aircraft to boot, the risk from fire seems pretty high, and the risk of collision the same as the glider.
In the cases of the three mid-air collisions suffered by Air Cadet Grob Tutors on air experience flights, reading between the lines of the accident reports, it would appear that had ballistically deployed airframe parachutes been fitted, that could have been operated by a briefed cadet, lives would have been saved. I hope they are included in the specification of any future replacement.
Expecting a first time flier to make a successful exit, make what is probably their first free fall parachute jump and steer it to a safe landing, is a tall order, although I am aware of at least two instances in which it has happened.
Pulling a BRS handle and staying where you are (in all cases except fire) strikes me as giving the average person the best chance of survival.
To criticise the Cirrus pilots who have made successful parachute recoveries, once they had evaluated the situation they were in and and assessed the skills and experience available, seems churlish. Any sim pilot can, after a few attempts come up with an alternative scenario, but the choice with the highest chance of survival at the time is the one that matters.