The question will have to be asked in the age of misinformation and misrepresentation. As it is, AI is trained on content often from trusted third parties (or scientific articles in many cases). I just ask the question of a snowball effect, where a low quality content will generate another one.

Obviously as I said and as you remind, the reputation and backlinks of a content are variables that can allow better indexing or not pages. But if these variables are also manipulated?