This topic was briefly touched upon in the Artificial Intelligence topic but not explored or discussed at length. Therefore, I would like to encourage further discussion.
Although there are some aspects of the subject that go into wild and unfounded speculation, the basic idea is that increasing bot (specifically advertising, AstroTurf, and engagement-farming) content and activity is overtaking that of real human users on the Internet.
It's a theory that seems plausible given current statistics, and, if not fully true right now, quite possibly it will be in the near future.
It's connected to the theme of artificial intelligence due to the fact that LLMs (Large Language Models) can produce content very rapidly. It is technically possible to flood areas of the Internet that accept user-generated content with mass-produced AI content. It is already happening in many places, including social media and search engine results.
Many would likely agree that this is one of the negative impacts of AI - spamming, or flooding the web with mass-produced and often meaningless content.