He is not failing to understand anything, nor is he seeking correction. Molyneux uses rhetoric to assert power and authority, not to communicate. He knows it. He’s doing it deliberately. He damages language like other authoritarians and demagogues, using words to mean their opposite or in a repetitive, circular, meaningless word salad, especially words that convey ideals - “truth”, “reason”, “evidence”, etc. …
It’s meant to disorient his followers and take away their ability to communicate with others (which results in isolation). The damage is difficult to recover from, because the listener becomes distrustful of the words after they have been manipulated by them, and the words become useless to convey the ideas and ideals they were meant to represent, and maybe even the ideals themselves.
This is an interesting discussion between a linguist and journalist about this subject:
@29:40 is the part I find most interesting, though the entire discussion is worth a listen:
https://youtu.be/bnUc5GVOQ4M?t=29m40s