I fly a 21st Century Designed mid sized chunky bizjet with airliner derived avionics. It does not however have autothrottle.
I was taught to have a hand on the TL's within 1000ft of the ground just in case, forgive me but it just appears to reinforce the lack of basic airmanship and stick and throttle skills that seems to be apparent on these types.
Too much reliance on automatics in an ever changing weather environment with too many variables with a A/T system that by everybodys reckoning isn't able to cope.
Training and basic airmanship issue imho ......a small addition of power and its prompt removal would have made all the difference here - why didn't it happen?