A senior executive at the National Australia Bank has firmly rejected allegations that she employed artificial intelligence to compose a social media update that has been derided by critics as potentially the 'worst LinkedIn post of all time'. The controversy centres on NAB retail bank chief Ana Marinkovic, who shared her reflections after attending a corporate event featuring former United States vice president Kamala Harris as a keynote speaker.
Social Media Post Sparks Intense Debate and AI Speculation
Marinkovic published the contentious post on the professional networking platform LinkedIn following the Women Unlimited Leadership Summit, where Harris delivered an address. The lengthy update commenced with the statement: 'Today I had the rare opportunity to listen — not merely hear — (Harris) speak at the Women Unlimited Leadership Summit. In a world saturated with noise, this distinction feels increasingly precious.'
It continued with effusive praise, noting: 'From the moment (Harris) stepped up, there was no pretense — just a seasoned mind wrestling with our era's defining fault lines. She didn't shout or sensationalize; she articulated. Which, in many ways, is her enduring legacy: a reminder that clarity still matters.'
Critics Question Authenticity and Writing Style
Australian Financial Review columnist Mark Di Stefano launched a scathing critique, branding the post as one of the 'worst posts ever committed to LinkedIn' and openly questioning whether it had been generated by an AI chatbot. Observers pointed to several stylistic elements that raised suspicions, including an excessive use of em-dashes — with nine appearing in total — which is often considered a hallmark of text produced by ChatGPT.
Further scrutiny highlighted the post's reliance on jumbled clichés and Americanised spellings, which an AI detection tool subsequently flagged as indicative of automated content creation. The combination of these factors fuelled widespread speculation across social media channels, with many users expressing doubts about the post's human authorship.
Executive Denies AI Involvement and Hits Back at Claims
In a robust response, Marinkovic addressed the mounting controversy by condemning what she described as 'fake news and misinformation'. She emphasised the importance of distinguishing truth in an era where such tactics frequently target individuals who are least able to defend themselves. The banking executive, who arrived in Australia as a thirteen-year-old refugee from war-torn Serbia, explicitly denied using any form of artificial intelligence to write the post.
A spokesperson for National Australia Bank corroborated her account, telling the Australian Financial Review that Marinkovic authored the entire LinkedIn update independently, without any AI assistance. When approached by the Daily Mail for additional comment, the bank declined to elaborate further, stating it would not be making any additional statements on the matter.
Mixed Reactions from the LinkedIn Community
Despite the fierce criticism, the post also garnered supportive feedback from some LinkedIn users. One individual described it as 'simply brilliant and a powerful reflection', adding that it served as a compelling reminder for all leaders. Another user thanked Marinkovic for sharing her reflections, calling the experience 'amazing'.
Marinkovic, who previously spent fourteen years working at ANZ Bank before joining NAB in 2019 as an executive general manager, has built a notable career in the Australian banking sector. The incident underscores the growing scrutiny of corporate communications on social media platforms and the increasing sensitivity around the use of artificial intelligence in professional contexts.



