ChatGPT was not the first LLM, or even LLM product. If I had to venerate any AI-based accomplishment, it would be the publishing of Attention is All You Need and subsequent documentation of the transformer architecture.
In the grand scheme of things, I think ChatGPT is unsustainable product slop anyways. OpenAI's innovation is sporadic and shallow, and the few cutting-edge things they make aren't open whatsoever. Their benefit to humanity is marginal, their value proposition is ridiculous and the potential to disrupt them is already playing out. Qwen's free tier is so good that I haven't used ChatGPT since 4o launched.