It’s not a pre built PC, it’s a gaming console that can also be a PC, if needed. That’s how the steam deck is marketed, that’s how the previous steamos PC was marketed, and clearly Lenovo thinks the marketing will work. A unified simple introduction to PC gaming as cheap as any console but with near infinite backwards compatibility is a pretty good sell to the normies who have nothing but marginal upgrades to look forward to in the console space.
He’s Australian, Kmart is still fully operational in kangaroo land