If my cranky memory serves me still, the "original" factory supplied gizmo also had a device attached to the control lock that was put over the throttles as well.
The original intention being that it prevented starting the engines with the lock in.
Conduct a review of the system currently being used on your aircraft and find out if it is original, a non standard local "invention" or "make do" and if it provides an active defense against its improper or innapropriate use.
Some may be life threatening, as above, others may be just inconvenient, like Pitot covers left on, others just plain expensive, like non standard turbine engine inlet bungs left in.
For example, in the turbine example above the standard bung is attached to the propeller in such a way that it's rotation pulls the bung out and throws it clear should it somehow be left in.
The standard bung had been left behind at the last stop, a temporary bung was made out of a dollars worth of low density foam for short term protection from a dusty gritty wind.
You would not believe the mess it made of the engine nor the cost when it was ingested during the start.
