Or an older Agatha. With Gil and Von Zinzer? Yeah, that's Agatha, not momma, in my eyes.
I read his lobotomies to be more like trying to figure out ways to neutralize 'bad' sparks without having to kill them. If he can do it with a bit of brain surgery, and not lobotomize them, then they can join society safely.
Dr. Dim? Yeah, nobody cared if he got lobotomized to a high degree. He wasn't a danger anymore.