People don't write just for monetary reward. I really don't want to find a blog that makes low effort write-ups in order to collect Google search traffic. I prefer the authors who don't do it for money.

Language model on top of search is an opportunity to filter out the same junk and spam you complain about.

Approximate attribution is possible, just find the most similar training examples to the generated content.

I think in a few years the quality of generated content will surpass most of what humans create today.