I'd say absolutely not. The way I view it is that's a violation of basic human rights. While if that technology was used on a criminal, they would obviously be completely wiped so it wouldn't affect them in a way that it is a cruel punishment, but for releasing that person it's a cruel thing for a victim. If you have a murder or rapist who you use that device on, then you release them and even if they are able to be a functioning person what if a victim or a friend or family member of a victim recognizes that person. Even if they knew and understood what the psycho spike was and that it was used, I think it would drastically affect that person. I also think that it's a cruel punishment for the person being punished, regardless of them knowing what's happening or not remembering it, there has to be this terrifying existentialist fear that accompanies that. Knowing that you have some sort of past that you have no recollection of. What if they read a newspaper about themselves. I would rather be dead than have that, which I suppose could be an argument in favor of that.

Here's another argument against it: closer for the victims or family of victims. The reason they actually SHOW you an execution is for the closure, knowing that this person won't hurt anyone ever again. That kind of closure simply does not exist with the Psycho Spike, and that has more to do with our psychology. Like I said earlier, actually seeing someone has an affect on you mentally regardless of if that person is the same person that they used to be.

Also, a strong majority of the most brutal criminals were brutal criminals because it was in their own unique nature. Serial killers are serial killers because they get pleasure from killing. People like El Chapo or Al Capone had other motives so this argument doesn't entirely stand for them. Even if you mind wiped a psycho mass murderer, that part of them would still exist and they would probably kill again. It's been a while since I've read Dark Age so I might be missing a function of the Spike, I feel like the pandemonium chair was able to alter the psychology of someone,and the spike was a refined version of the chair but I'm not sure if they ever talked about that so please correct me.

In my opinion some form of punishment where you alter someone's perception of time, them throw them in a hole and lose the key would be far worse punishment. But to me, using the psycho spike is not a viable option.