From the article: 1.859 billion kWh. Divide by 1 year = 212 megawatt. Definitely not small. Not that gigantic either, compared to current day (US) AI/hyperscalers.
I was thinking the same, who on earth would want that, so did my technical colleagues, but since the AI summaries rolled out over here, non-technical folks I've asked about it actually seem to like it.