They didn’t say there’s literally zero effect, they said that there’s negligible disruption to job market from the introduction of AI.

Be careful with "they". The "zero effect" in the headline was likely written by a Register editor, two steps removed from the authors of the study. I think the quote in the fourth paragraph is more telling:

> "Overall, our metrics indicate that the broader labor market has not experienced a discernible disruption since ChatGPT’s release 33 months ago, undercutting fears that AI automation is currently eroding the demand for cognitive labor across the economy," said Martha Gimbel, Molly Kinder, Joshua Kendall, and Maddie Lee in a report summary.