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

His posts on AI are often very insightful and, unusually for someone so involved in AI, he's not connected to any of the big AI companies. Therefore he is impartial.