We do not use information provided by him as our only sources.
Something he said also is not enough of a source too I'm afraid. We had the same thing with the Lighting where people claimed to have spoken to pilots who said "it's like a rocket" and expected us to do something with that and treat it like a valid source.
Indeed he's extremely knowledgeable and we have used some of his source material. But spoken words or something outside of a proper publication are not proper sources or something we can use.