Those photos and explanation of the process are excellent. I like when companies disclose their processes and methods.
That said, and I'm sorry if I've written this before, but you cannot forge plastic. And that's what these cases are, chopped strands of carbon fibre in a thermoset (polyester?) matrix. It is possible, as you've shown here, to perform a high-pressure molding, which should result in a higher density end-product, with some benign flow, but it the material itself is not forged.
Forging is using compression to align the grains of a metal so that they follow the shape of the part. Strength is gained by having uninterupted grain flow though the form of the part. (Think of the grain in a block of wood, if the grain lines follow the shape the part, it'll be superior to one cut across the grain)
Which brings me to my second point, which is by milling out the case, you are interupting the grain flow - which is the whole point of forging. Hmm.
And finally, as the moulding uses a random distribution of fibres, there is highly reduced ability to take advantage of CF's main advantageous property, it's tensile strength. The higher pressure moulding will improve it, but not to the extent of correctly aligned fibres.
None of which is to say that the process doesn't provide a lightweight, strong case, but nowhere near what the material could really achieve.