It's my personal opinion (and opinion only) that proper anodization of the metal was more costly to Apple. So, instead of properly hardening the metal they simply chose to reduce the anodization time. That results in a lighter color that still scratches the same but because it is lighter hides those scratches better.
Neucase is proof that the anodization of black can be done properly. Apple just chose not to do it.
If they are offering black this time it's because they finally decided to do it correctly.
Again, just my opinion.
I get that you are free to have and voice these opinions, but honestly I'm fascinated that someone like you who clearly despises Apple, and assumes that everything they do has some evil motive, are reading and participating in an Apple forum. I just don't get it.