Well for one thing because this (see link) was already a national news story earlier this month. So, it isn’t exactly that far of a leap in logic for these suicide booths to be replicated for use in capital punishment in places where it is still utilized, like the United States.

One could even argue that it makes the process less morally objectionable, and therefore might make it harder to justify banning the practice. I am simply playing devil’s advocate here because this is precisely the kind of logic that is already pervasive in US politics when justifying otherwise morally objectionable decisions.