Charles Manson was a victim of the system?

On some real a$$ edgelord mess, I think the system wronged him. He was CLEARLY mentally ill but didn't fit the category of scitzephrenia or psychosis, so he was never diagnosed. Obviously he's dangerouse and was a homicidal maniac, but the key word is MANIAC. I DO NOT think he is fully responsible for his actions, and I think he should have been in a mental asylum instead of a prison. Putting a 5'2 mentally ill homeless guy in a fucking prison was fucked up. Also, I know i'm not the monster for feeling empathy, but ppl who paint people with black and whites brushes are