Just want to call out this is fresh from OpenAI that actually talks about data preparation, their models (to some extents) and some negative learnings. Still no

Just want to call out this is fresh from OpenAI that actually talks about data preparation, their models (to some extents) and some negative learnings. Still not as complete as what's from their peers (Stability AI, Meta, adept.ai etc). Probably it just shows their core focus is on LLM or there is a change of heart?