Long ago, as many others, I started noticing the fact that Google search results for reviews and articles was basically filled to the brim with link farm content pages. Especially for Norwegian content in my case.
Email has been broken for years too with the amount of marketing and spam-y content coming in on the daily.
Maggie Appleton writes on this topic also: The Expanding Dark Forest and Generative AI. Especially in relation to how one might go about proving one’s humanness.