I don’t get the obsession with lethal injection anyway. You have firing squad (which was used in Utah a few years ago) and the electric chair, none of which require any stall tactics about how Anesthesia A is bad, but Anesthesia B is acceptable, but B can’t be found for sale, so let’s debate in court for years about if we can use Anesthesia C.
Because our 8th amendment prohibits "cruel and unusual punishments" the legal tactic has long been to make every capital punishment seem both "unusual" and "cruel".
Lethal injection seems to escape the charge of "cruel" so the legal battle intensifies to make it more difficult and therefore ever more "unusual".
My impression is the opponents of capital punishment don't even try to hide their true motives in using the legal system to its maximum effect.