Much much longer than that. The term has been used since AI began as a field of study in the 50s. And it’s never referred to human level intelligence. Sure, that was the goal, but all of the different sub branches of AI are still AI. Whether it’s expert systems, LLMs, decision trees, etc, etc, etc. AI is a broad term that covers the entire spectrum, and always has been. People that complain about it just want AI to only refer to AGI, which already has a term. AGI.