I honestly hadn't heard about this issue until I came across this article, but a quick search pulled up a number of results from reputable sources. Like Forbes
https://www.forbes.com/sites/bernardmarr/2024/08/19/why-ai-models-are-collapsing-and-what-it-means-for-the-future-of-technology/
https://www.forbes.com/sites/bernardmarr/2024/08/19/why-ai-models-are-collapsing-and-what-it-means-for-the-future-of-technology/
Comments
https://www.nature.com/articles/s41586-024-07566-y
https://www.ibm.com/think/topics/model-collapse