He's actually riding a MotoGP licensed scooter made by Yamaha. There are pit bikes in car racing and motorcycle racing for when racers or crew want to get around the pits quickly but at low speeds. It's quite typical, all the big racers do it and it doesn't diminish their manliness in the least. What is also typical is the British press' interest in disparaging people when it is unwarranted.
Ride on, Antonio!