This is ML. I guess AI term can apply here but I think it's a bit disingenuous to advertise as such. People will conflate the term with llm chat bots.
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I still have my textbook from almost 20 years ago: "Artificial Intelligence: A modern" by Peter Norvig. Lots of topics covered as AI there that surely do not meet your definition.
Just clasify the method used as what it is to a supposedly educated crowd. There is no need to classify a marketing term. And yes, for that book it's also just marketing.
Modern day usage of AI is heavily conflated with generative AI such as LLMs and Text-to-* generation systems.
My preference, as someone who works in a very closely relate field to the article, is that science should stay away from non-specific terms like AI. I've had my director approach me seeking grant ideas on using AI. It didn't go down very well when I suggested we should try to use image recognition to automate data entry. That seemed 'old', they wanted a chat bot to do... something.