[Unearned5161]

People are bad at distinguishing strange voices in a lineup, yes. That is, anyone in this thread who hasn't heard much of either the NotebookLM or Greene's voice would be a terrible witness.

However, the equation changes considerably when the voice becomes familiar. You can imagine it like going from CPU to an ASIC. The brain is rather good at telling when a voice is your friend or not, the evolutionary pressure should be clear. Therefore, the people most qualified to speak on this matter will be first and foremost Greene and his podcast fans. It's a matter of exposure.