No, I'm just making two claims at once. It ought to be cheaper, normatively, and thereby it ought to be done. It's kind of like "I want to see slaves freed because humans should be free, even if there exists a lynch mob that is killing all the freed slaves." The existence of the pathological problem making the claim overall worse, currently, does not affect the philosophy that the slaves should be free (and also that there should not be a lynch mob).

The death penalty is supported by over half of the US population; any argumentative style that attempts to belittle or mock as niche this position in a form of appeal to consensus only works in certain bubbles. Your position is the more unpopular one, lmao.