“This bears significance to me, as I'm arguing about the significance of Jehovah's Witnesses comparing disfellowshipping as being analogous to ancient capital punishment in ancient Israel.“
In the past they have certainly used this analogy but I don’t think they would be so certain now. Everything changes in WT doctrine, don’t we know, and thoughts on the resurrection are less dogmatic.
They know that some will not be resurrected but who ? Nowadays an informed Witness would simply say that is up to Jehovah and they will wait and see.