I was in California prisons for over 25 years. That is pretty close to the truth. Guys that slaughtered women and children were not well liked either. Serial killers, not so much either, but I always felt they glorified cop killers, whether they made it plain or not. You are right, however, there is honor among thieves. It's weird, that the dregs of society have a code, but they do.
My hierarchy structure comes from my friendship with many Prison Guards over the years, many became street cops along the way. When we would get together after a long day protecting and serving, the former guards would regale us with story after story of the shenanigans they encountered during their prison service time.
Made for a great time while we enjoyed our favorite adult beverages. LOL
I hope hero killer is among their top targets when Eddie Ray Routh arrives!!!