And why would this paragon of virtue Mueller, not have followed this law on his own?
He should have, we don't know that he hasn't yet. This Judge saw somebody get burned because DoJ ignored the Brady Rule (I think it was AK Senator Ted Stevens), and now writes this into
all his orders when dealing with DoJ. This is SOP for this Judge, so I'm not going to read into that any suggestion there's been malfeasance (Although knowing about the lawyers involved, there probably have been dirty tricks played with evidence, and it will come out).