Did I say that I want the death penalty back because it soothes the right-wingers? No, I didn't. It would merely be a positive side effect, the goal would be, as stated, to remove child rapists from existence. I know some people get really triggered when their political opponents gain something as side effects, so much so that they'll argue against that thing even if they get more out of the deal, but that's not me. If there's a deal where everybody gets what they want, then I'm very happy.
Of course the death penalty isn't actually that, but if you allow your rational side to hide at the back of your brain for a bit and let your emotional side go to take the lead, then that's how it may look.