I think you and a lot of other people are missing an important aspect here: based on my experience only, it would have been devastating to me had my abuser been put to death.
Certainly, not all victims would have the same feelings, but enough would that it would be a problem.
Not many people would say that.
Not because they don’t have a different view, but because the majority accepts only the most extreme view as legitimate and does not want to, is afraid to, deal with individual circumstances.
They only draw the line by admitting that false accusations are possible and some prosecutors stop at nothing to get a conviction and the resulting public approval while the facts are cloaked in confidentiality and general unspeakableness.