The more important point is that people react to things happening, they don't just sit there and take it. A rise in automated content is going to be countered

The more important point is that people react to things happening, they don't just sit there and take it. A rise in automated content is going to be countered by the development of AI explorers who's sole role is to establish data provenance (this is what Google should be doing but isn't). No one wants a ChatGPT which blindly trusts the internet, they want one which will backtrack sources during it's training to determine if they're true - this is likely to be the next innovation from OpenAI anyway, since ChatGPTs value as an assistant is based on it's ability to provide accurate information to start with (and not be self-trained on it's own ideas).