My searches of Jack Bybee's work as a physicist turn up absolutely zero citations in the academic literature. Maybe when people say he is a physicist, they mean he teaches high school physics, not that he is on the short list for the Nobel Prize.
Also, his conditioners and his outrageously expensive RCA "bullets" don't seem to be as widely reviewed as most others out there. On the one hand, maybe this means that he is shy about publicity, unlike Louis Motek, another "phyicist". On the other hand, maybe this means that reviewers who have nothing good to say keep their mouths shut.