Isn't the content that is being generated coming primarily from journalists. Even if there were more amateur writer producing content, there is still no guarant

Isn't the content that is being generated coming primarily from journalists. Even if there were more amateur writer producing content, there is still no guarantee that the content is free of bias. Aggregation can only help so much that the end reader must be able to fairly evaluate the contents and come to a reasonable opinion. This is a problem that content aggregators cannot solve.