The strongest and most widely accepted criticism was that a psychiatrist should not publicly associate a named living individual with a psychiatric concept (even a descriptive, non-DSM one like 'pseudologia fantastica') without having examined them, taken a history, or obtained consent.
Pemberton repeatedly caveated that he had never met Arday and was speaking “generally.” Critics argue this does not fully neutralise the issue: by naming Arday, reviewing the public allegations against him, and then explaining a recognised pattern of elaborate self-mythologising, the column effectively invites readers to apply that pattern to him.
Professional norms (reflected in GMC Good Medical Practice principles about working within competence and the spirit of the American “Goldwater Rule”) discourage this kind of media commentary precisely because it risks error, stigma, and misuse of clinical authority.
The most substantive criticisms, then, are not that the general psychology of elaborate, self-reinforcing fabrications is invented or baseless. They are that a practising psychiatrist should not publicly map that pattern onto a specific named person on the basis of incomplete media evidence, especially under the professional constraints that apply to doctors and in the charged circumstances of this case.
The psychiatrist the Daily Mail commissioned for their Jason Arday article was Max Pemberton; he has now locked his account.