I interpreted Qz's comment as "this professor is deserving of the allocated credit." As a recent CMU CS grad (and student of Professor Miller) I would agree and say that this is also generally the case.
But given the thread root, and not knowing any more about Qz -- indeed being unable to trivially associate that handle with a real name/project via the profile page -- a cynical comment from a disgruntled grad couldn't be ruled out.