I have seen pictures of deer, roo or donkey, etc that have gone straight through the windscreen.
There are less complicated ways to prevent unwanted pedestrian or animal entry via windscreens.
Way back, a friend bought a Citroen ID19. The bonnet didn't match the rest of the car.
"Oh," said seller, "I hit a horse, it rolled up the bonnet and went over the roof!"
The beast had deformed the bonnet but I think the roof is glassfibre so it just flexed.
Personally, I have been hit by a car and my biggest fear at the time was that the driver predictably hit the brakes and as there is nothing on a windscreen to hold onto, I slid off the bonnet and nearly went under the vehicle. All these newfangled mechanisms are unlikely to prevent this.