Even if he did, so what? Herbert wrote science fiction, which requires some gizmos or technology to at least be different than today's. Any Sci Fi author throws

Even if he did, so what? Herbert wrote science fiction, which requires some gizmos or technology to at least be different than today's. Any Sci Fi author throws out things to remind readers they're "in the future" or whatever. By dint of writing a lot, prolific authors get some things right.