"Rhetoric" is far too generous - assuming the person is peaking honestly, it is well into mental illness (delusion) territory - although, all people suffer from

"Rhetoric" is far too generous - assuming the person is peaking honestly, it is well into mental illness (delusion) territory - although, all people suffer from this kind, so it is not classified as a mental illness, and is thus (in part) not considered not a problem worth worrying about (or a problem at all).