She was critical of a contentious PwC report into the cost of a plebiscite on same-sex marriage for relying on dodgy figures, but conservative commentator Miranda Devine has been caught trying to pass off a discredited medical association's claims about transgender people to make her latest argument against equality.

In March, Devine accused PwC of engaging in "advocacy masquerading as accountancy" in releasing a study claiming that a plebiscite would cost the Australian economy close to half a billion dollars, but she is more than happy to look to the expertise of others engaging in their own advocacy masquerading as medical expertise when it suits her agenda.