Yes, he is definitely heavily invested in his worldview. Nothing I can say will change his mind. I only debate him because he seems to have a small following and maybe I can sew some seeds of doubt among his followers. That and to satisfy my curiosity about how someone who appears to be so bright can be so truly muddled.
Talking with Zeitgeisters about money is always skirting the core disagreement, anyway. It is not just money they oppose, but all ownership, trade, laws, etc. It all springs from their denial of the existence of scarcity, which is a confusion resulting from their failure to define the term and stick to their definition. Every Zeitgeister I’ve talked to says (sooner or later) that nothing I say about economics or ethics matters because it simply doesn’t apply to their “post-scarcity” world (see Carlos in the comments, for example).
They first define scarcity as something like “not having enough,” and then they say that with 3D printing, vertical farms, etc, everybody will have “enough” of everything, so they conclude that ‘there is no scarcity in the RBE’. But then comes the word-thought overwrite. They switch their definition of scarcity to mean a world where objects have multiple incompatible uses, so conflicts are possible. Using this definition they conclude that ‘laws/ownership are necessary only in conditions of scarcity’. They equivocate on the word scarcity to conclude that laws/ownership are unnecessary in the RBE.
When I went through this in painful detail with Carlos in the comments (starting here), I did get him to acknowledge that RBE is not a post-scarcity world in the sense that conflicts are impossible in an RBE. He agreed with me that scarcity in that sense will always exist, and therefore rules about resource use (ownership) will always be necessary. But then when I asked him to explain how arbitration would work in the RBE and what ownership rules would exist in the RBE, he stopped replying. He came back 6 weeks later saying he’d “changed his mind” and he re-asserted that there is no scarcity in an RBE so no ownership rules are needed!