A counter point to your assertion is that more sources are better, if they are not all saying the same thing and being controlled by the same few owners. Which in today's world, in the west, most certainly are. Many years ago the news was covered from multiple angles so even with few sources I felt I was getting more insight to the story due to different perspectives.
Honestly due to the deluge of news I feel people today are more opinionated, less informed, easier to manipulate/deceive via controlled narratives, and have way shorter attention spans. The quality of journalism is so far gone it is laughable, so having more of a bad thing doesn't make it better imho.