I don’t know if this will turn out to be the worst ever approach, but it is going to make the top 10.
I would be shocked to see a performance like this from a 200 hour first officer doing initial type rating training in the simulator, let alone two Captains in the aircraft. Any trainee who did this would be instantly flagged for closer investigation, the debriefing afterwards would be very interesting and likely to involve senior personnel from the training department.
Any instructor has had students mess things up with alarms going off, but anyone with a bare CPL should have known that continuing wasn't a good option.