It makes sense that they wouldn't have anything to comment anyway. Google themselves don't actually manufacture most Chromebooks, they only provide the OS. I imagine the majority of the mass of Chromebooks in the world by weight are actually designed and made by Lenovo, Asus, Dell, HP, etc. Even the Google branded ones are manufactured by someone else under contract.

It'd be like demanding Microsoft explain to the news why your Dell caught fire simply because it had Windows installed on it.