If you look at Carmen's career you will find that she has actually done a lot of good, in getting bad folks put behind bars. She, or her staff, blew it on this one. I wish I knew why. I doubt we'll get the actual story there.
So to what end would ending her career advance Aaron's goal of getting copyright on public records overturned? Making people "afraid" to prosecute it is the wrong answer, making it "not a crime" is the answer. There are only two ways to do that, one is to repeal the statute that makes it a crime in the first place, the second is to litigate the statute and find that the statute is invalid.
Firing Carmen doesn't help, although I completely understand the emotional appeal of doing so.
[1] I know that would not have happened it is illustrative.