While some news can be generated exclusively from scraping Reddit threads or whatever, most decent journalism incorporates some form of reporting, i.e. the generation of novel information from trusted sources. Even without reporting, if you can't add to the store of knowledge in the world by writing the article, it doesn't offer any value to consumers or advertisers. That includes the the world of SEO spam. An effort has to be made to distinguish your work from the competition, or else your site isn't winning those top results.
Reddit threads are often just full of emotional responses to news already generated in this way. At some point along the line, a human has gone out and spoken to another human, forming an novel angle or argument, pursuing a line of inquiry, connected dots no one else has yet etc. That's news, not a summary of existing attitudes.