It's the name at the top. This particular author has been active with LLM posts at least since the popularity explosion of ChatGPT and all of their posts on that topic seem to be well-informed (and they are otherwise community-famous for co-authoring Django). To your point, the content is only as special as the author's reputation makes it, which will be different from reader to reader.

https://en.wikipedia.org/wiki/Simon_Willison