You can be factually correct and be petty at the same time. You can read more about his conversations with people who argue with him or all the the time he brings up Galactica's failed rollout comparing it to ChatGPT and wondering why it hasn't been paused as well given that, a quote from him, "that Galactica even produces less BS".

He also seems to undermine the rapid engineering work and MLOps that come with ChatGPT which is funny because Meta hasn't released any substantial product from their research that has seen the light of the day for a week. Also, GPT3 to ChatGPT in itself in a research perspective is a jump. Maybe not as incremental as what Lecun does every paper, but compared to an average paper in the field, it is.

You may have a toxic aunt. But if you always talk about it in the dinner table, that's petty.