Your car has valve springs that stay compressed when the engine is off. Marinate on that one for a moment.
I personally never got the point of these discussions, because in actual use of the gun, why does it matter? If you plan to keep it cocked and loaded by the door for a month in case you need to shoot something, well that's an issue in itself IMO.
In actual use for hunting where the gun may stay cocked for several hours, it makes absolutely no difference whatsoever.