Well, it's also about assembling the parts, not just about using Linux. The main point, however, is the idea - I can only speak for myself, but before seeing this, I never thought about creating a Linux dongle for my TV. And, to be honest, even if at some point of time I would have had the idea to create such a thing, it would have been quite hard for me to figure out how to properly build this - not because of Linux, but because of the hardware. Not everyone's good at everything.