We do not need a BLOCKCHAIN to figure out what is newsworthy... this is a human problem, not a decentralized-immutable-trustless-system problem
However we also have the problem that is the "Daily Mail" which is a truly vile publication - which I read because it keeps me informed on what a significant chunk of the population of my country thinks.
We don't really have any truly decent news sources left or right wing, they've all moved to click bait nonsense and "reaction pieces" to something someone said on Twitter - I suspect because it's cheap.
The best of the bunch in terms of what I consider classical journalism is probably The Guardian (which is biased) and as long as you avoid it's opinion section (bleh) is a reasonably decent paper.
Honestly the best you can do to remain an informed citizen is read a bunch of them and look at what is not been said by each.
The FT is the only one left. All the others are weird poisoned wells where the factual reporting is mixed with opinion slurry, and beholden to the prejudices of the owners.
Here's Peter Oborne resigning from the Telegraph over their standards: https://www.bbc.co.uk/news/uk-31510152
Here's the Guardian US published in the Guardian complaining about the UK Guardian falling for the transphobia that has recently infected UK public life: https://www.theguardian.com/commentisfree/2018/nov/02/guardi...
The landscape is not diverse: https://www.mediareform.org.uk/media-ownership/who-owns-the-...