Hi,
Are you overthinking things, or unfortunately just unlucky on this occassion? If it has happened multiple times or going to happening multiple times, then go ahead and fit a radiator guard. I have one on my motorbike because it is fully exposed, but it is a standard item on motorbikes.
I would just chalk this down as an unfortunate incident than ruining a lovely NEW car, that could void the warranty with any aftermarket products.
Sorry, just my thought.
Joe