Mistake after mistake after mistake.
They were bent over the barrel with their underpants around their ankles long before the sensors sneaked up behind them.
The report describes a comedy of errors which should never have even started. Leave test flying to test pilots, they are trained and paid to expect and understand the unexpected. Starting a stall manoever at low altitude was only the last piece of idiocy in this tale of foolishness.
It does not matter how foolproof you make the machine, the world will breed a better idiot to outwit you.