As someone who studied CS and has followed the field of AI for a long time, you have it backwards. Machine Learning and GPTs like ChatGPT have always fallen under the umbrella of AI. Using “AI” to refer exclusively to AGI is a new trend.

To be a bit combatative here, in my opinion this new definition of “AI” that some people insist on using is either repeated by people who don’t understand the history of the terms, or intentionally spread to mislead people by others who want to win an argument by redefining terms.