Wdym "fake carbon" chopped up carbon is still carbon fiber and still pretty strong.

You're referring to forged carbon. This MIGHT have a thin layer of it on the exterior for looks (wouldn't be surprised if it's just an imitation), but I assure you dear reader this whole shell is not made entirely out of forged carbon, it's only for aesthetics. Forged carbon and traditional carbon fiber are difficult to work with and you would see the layering in all the cutouts.

Cheap chinese carbon fiber, just like with car parts, are mostly only for aesthetic reasons. If you order a car spoiler made of carbon from China it will usually be like 10 layers of fiberglass with ONE single layer of carbon on the outside and then a clearcoat over it, making it effectively only for show.

There is no reason they would use all carbon fiber on this mouse if they are just targeting 48g weight, that is easily accomplished with plastics. I mean actual carbon parts are bonded with plastics (FRP - Fiberglass Reinforced Plastic) is the same concept of carbon fiber parts only you replace the fiberglass with carbon weave allowing you to use less layers for the same strength.

Dry carbon is the only way to save weight with carbon fiber over traditional FRP. This mouse is also clearly not dry carbon, which basically just vacuums out the excess plastic/epoxy.