“Shame on him. He should know better than to preach slavery, even in jest.”
As I understand the doctrine, it is not of slavery per se, so much as it is of servitude and second class status. More like apartheid or Jim Crowe with diminished and inferior rights rather than chattel slavery where one is property.
Theologically, I wonder how this school of thought deals with jubilee?
I was thinking of replying by explaining some of the differences (at least as I understand them) between Jewish and non-Jewish slaves, but considering what sometimes happens when I hold forth on such topics, I thought better of it!
Questions about the jubilee year are part of Shemitta. The FR expert on that is Carrie Okie who happens to have an internet book called Shemitta: For The Land Is Mine.
As it happens one of Israel’s top scholars on that part of the Old testament did discuss the book with the author in detail. Rav Moore’s comment “fascinating” - repeated many times.
Google it, you will like it.
PS Rav Moore would be totally underwhelmed with the “Rabbinical theory” advanced by Rabbi Yovadia Yosef.