The names were bound to be published eventually, but they may have had to get permission from the next of kin or some such thing. I can’t remember the name of the group that supposedly runs the apartment or apartments. It appeared in the early reports (possibly in the British press?).
Rodgers had apparently done what he described as a “citizens’ arrest” of one of his roommates, claiming that the man had stolen $22 worth of candles from him. The police put the man in a cell overnight (probably for his own protection, the way they do in domestic violence cases). And there was another earlier call from Rodgers to the police about some weird thing. So the police were familiar with him and his roommates; I’m surprised that the police interview with him didn’t reveal the fact that he was about to snap, but he was probably pretty accomplished in faking out therapists and LE and knew what to say to seem “normal.”
Truly insane people can't fake "normal". So he isn't insane and he didn't snap. He was in control of himself and carefully planning his day of retribution for along time.
He was a deeply angry and bitter person who gave himself over to his darker emotions because all the therapy and money couldn't give him what he wanted which was probably an intact family with parents who actually loved and cared about him.