Not sure its a currency thing more like rushing yourself or nerves or your mind being elsewhere.
Having said that we are only human and there are probably not many of us who have not done something stupid at one time or another.
Hence why checks are so important external as well so that the stupid mistake is not an item that could be dangerous.
Pilots have taken off with all manner of items unseen. Pitot covers still on, open fuel tanks, even doors or baggage doors open. One guy even took off with a concrete tie down still attached to the tail.
The list is endless
Pace