It took many many years for Porsche to begin to try to understand the American market. Being the "other" type of vehicle manufaturer that establish Detroit, American buyers sometimes need different coddling from what the company wanted itself to be -- race cars for the street, to some degree.
The factory was shocked when America rose up about the runs in the paint that were "okay" with Porsche and its almost totally hand-built car. And they REALLY weren't prepared when the early Boxster and 911 didn't have a....CUPHOLDER!
So, the lack of a mesh-grill for the radiator openings is not an oversight -- Porsche and its engineers just decided it wasn't necessary! And, maybe, such a grill might be a performance issue avoided.
So, it's okay to buy someone aftermarket idea for what might presumed to be a "dumb oversight" by Porsche. 'Cause everybody's got opinions.
And Porsche knows what it's doing -- making a high performance, reliable DRIVER'S vehicle -- that I would get into and drive to Alaska on any day... Sorry that my satellite and PCM isn't up to the quality of a Rolls-Royce.
Let's the beatings begin...but don't make them personal.