People demand sensationalist validation of their preferred viewpoints. Most news is dependent on advertising, which means it must maximize viewership to remain

People demand sensationalist validation of their preferred viewpoints. Most news is dependent on advertising, which means it must maximize viewership to remain competitive. News outlets that use this model have an existential incentive to utilize cheap tricks and sensationalize to drive up viewership and emotional investment in their properties. They will never be able to overcome that as long as that business model is in place. NPR and BBC are good because their viewership numbers don't matter nearly as much.