Seems that the elder was only speaking for himself and not voicing wt official teaching on the subject.
The wt does say that Government does have God given authority to execute capital punishment. By endorsing state execution as an expression of God's authority, the wt is actually saying yes to capital punishment while claiming to have a neutral position.
Captital punshment endorsed in the Bible wasfor moral law violations and was a direct expression of God's justice (according to the Bible). So that even when the Bible states that God used Assyria, Rome, as God's executioner, it does not mean that God had given these Caesars the authority to execute because they represented God's justice in all cases but only on specific instances.
In the USA the state does not dictate what is moral neither is anyone killed for moral reasons but only for legal reasons, however the Bible only endorsed moral based executions in the pastby God's agents
In our time Again, and again, and again the state has mistakenly executed inocent victims, oops Im sorry. And with all of the corruption ad deception, and mockery that makes up the Us court system and all world court systems being responsible for murdering whom they want, one cannot trust the state foe excuting anyone. But above and beyong that, there arte other reasons.