No, it wasn't.
As a proxy, here's HN results prior to November, 2022 - 13 results.
https://hn.algolia.com/?dateEnd=1667260800&dateRange=custom&...
Here's Google Trends, showing a clear uptick May 2023, and basically no search volume before (the small increase Feb. 2023 probably Meta's Llama).
https://trends.google.com/trends/explore?date=today%205-y&ge...
https://trends.google.com/trends/explore?date=today%205-y&ge...
As another proxy, compare Nvidia revenues - $26.91bln in 2022, $26.97bln in 2023, $60bln 2024, $130bln 2025. I think it's clear the hype didn't start until 2023.
You're welcome to point out articles and stores before this time period "hyping" LLM's, but what I remember is that before ChatGPT there was very little conversation around LLM's.