Yes, Tim Sweeney was technically wrong in the context of the entire breadth of PC hardware, but he's right in the context of consumer hardware and most mainstream gamers (which is the demographic that is most relevant).
Just saying. Its not. Its a computer but its not a PC, its not a home computer. Just the volume level alone would make it unreasonable.
Could you put this in a PC? Well yes.... you could. You could also put a couple fiber HBAs in a PC and connect it to a big storage array
but that isnt exactly a consumer solution either.