People are forgetting about the content farms like Associate Content [1]. Since the early aughts, these content farms would happily produce expert-sounding content on anything that people were searching for. They would buy top search terms from search engines like Yahoo, hire English majors for dirt cheap, and have them produce "expert" content targeting those search terms. At least the LLMs have been trained on some relevant data!

[1] https://en.wikipedia.org/wiki/Yahoo_Voices