Scary stuff indeed.
Even from day 1 when auto throttle is introduced for the first time on a B737-800 MCC/APS course, it can be highly addictive, similar I am told to ‘crack cocaine’....?
So from day 1 the trainees are taught to follow the thrust levers forward as TOGA button is pressed, and during any scheduled thrust changes.
From time to time they will forgot on the G/A, so A/T fail is smartly selected on the IOS panel and nature is allowed to take its course. They tend to remember in future......at least during the course.