Here in canada, they even have dummy labels on new vehicles that tell you these things. "Press brake to shift from park" or "Clutch must be applied to start engine" (we call them dummy labels because anyone with common sense should know this already)
Personaly, I think they are there for people that haven't driven cars before, like new drivers. But alot of them are retarded because you can't remove them, like the park sticker on my Express 3500, It's behind the clear plastic cover for the gauges, I'd have to take apart the dash to remove it, on top of that, its painted on.
I think there should be an overide on them, like on some automatics, you either press a button, or put the key in a slot, and it alows you to shift out of park. They should have a switch that overides the clutch switch, alowing you to operate the starter when ever you want.
It would have to reset after a short time though, because idiots would hit it and leave it on.